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Book:Horolovar 400 Day Clock Repair Guide, 10th Edition, Errors and Updates | NAWCC Forums

1. Book
2. Horolovar 400 Day Clock Repair Guide, 10th Edition, Errors and Updates

 

 

The Horolovar Guide is perhaps the most valuable reference available for repair of 400 day clocks. Starting as a selection guide for Horolovar suspension springs, it gradually expanded into a full reference for solving operating problems and identifying clock movements. Given that the latest edition of the guide was published almost 30 years ago, it is a testament to its value that it is still the go to reference for most 400 day clock repair.

Starting with the 9th ed., 1984, an effort was made to tell the history of the clocks and identify the earlier manufacturers. In this area the guide falls short. The author/editors certainly used the most accurate information available at the time, but much research since then has shown a great volume of information was, at that time, unknown. Much of the new information is still yet to be published as a new work or even as a correction to the repair guide. There are also many holes in the history that are yet to be filled. The unfortunate result is that over the years the incorrect information in the guide is now taken as accurate. It seems unlikely that a revised edition of the guide will be published any time soon. For this reason it would be very useful to create a comprehensive errata document to address the known problems.

This document is not an attempt to create a complete revision. It is simply to correct the known errors. Some information not previously published in the Repair Guide will need to be included here, as several manufacturers of 400 day clocks were not known about when the 10th ed. was published.

The information provided here is derived from the independent research and hands on work with 400 day clocks performed by various individuals who have posted their findings and comments to this message board. Additional information is from other outside sources as noted.

This is a work in progress.







 

Contents

1. Section 1 History of the 400-Day Clock
2. Section 3 History of Striking 400-Day Clocks
3. Section 6 Some Outstanding Pre-World War I 400-Day Clocks
4. Section 9 400-Day Clock Back Plate Illustrations
5. Section 10 400-Day Clock Suspension Spring Unit Identification
6. Section 13 About 400-Day Clock Pendulums
7. Section 15 400-Day Clock Suspension Brackets and Saddles
8. Section 18 Appendix

Section 1 History of the 400-Day Clock

Note: This section of the guide has some interesting history that warrants further review. It is a good starting point, but there are several major inaccuracies that need to be addressed, along with a few typos.

Note: The most current and accurate histories of early torsion clock makers can be found in the appendix of Timely Memories, A Look at Anniversary Clocks, text by John Hubby, 2017, published by NAWCC Chapter 168.

Page 8, Column 2, para 3:

Change: "Zwitung" to "Zeitung"

Page 8, Column 2, last para:

There is no evidence that Anton Harder had any contact or knowledge of the activities of Lorenz Jehlin until he applied for a patent for his own torsion clock in July 1878. Harder was denied the patent for a torsion pendulum but awarded No. 7543 for the design of his clock. Harder withdrew his patent request and his lawyers later acquired the rights to patent 2437 from Jehlin's estate in 1880.

Note: The best source of information on this subject is found in the article Jehlin's Two Patents & Harder's Own Story by Douglas K. Stevenson, NAWCC Watch & Clock Bulletin, Aug 2010.

Page 9, Column 2, para 2:

The firm Gershon Wintermantle and Co, later Jahresuhrenfabrik, was started in Feb 1881 from a group of workers from the firm of Michael Bob after the owner's death in 1880. Wintermantle, Schatz, and their two other partners purchased Bob's tooling and materials and set up shop in Triberg building weight driven regulators. In late 1881 another clockmaker working with Harder, a Mr. Siedle, contacted The Wintermantle Co. to see if they could adapt the Graham escapement to the Harder clock. Wintermantle & Co. made torsion clocks for Harder, in addition to their own clocks, until 1883 when the Harder patents were sold to F.A.L. de Gruyter. Afterward they made only torsion clocks. The company changed their name to Jahresuhrenfabrik (Year Clock Factory) in 1884.

Note: From the diary of August Schatz, Schatz 100 Years Jahresuhren-Fabrik GmbH Aug. Schatz & Söhne, A History of the firm 1881-1981.

Page 10, Column 1, last para:

Delete paragraph.

The first 400 day clocks with pin pallet escapements and lantern pinions were made by the Andreas Huber Co. after 1911. The 3-ball pendulum (Section 13, pend 28) was also made by Huber.

Note: Badische did not make the 400 day clocks with lantern pinions that they sold with their logo or any of those with lantern pinions without their logo. They did make 400 day torsion clocks that used an inverted weight driven movement and a single ball pendulum with the adjustment weights hidden inside. An explanation and diagrams of their clock can be found in the 1904 Leipziger Uhrmacher Zeitung, No. 20, pages 312 to 313. The clock design was issued British patent No. 7059 on 28 Apr 1904 (see Section 4, item 20). The pendulum design was granted DRGM 218447 on 27 Jan 1904.

Page 10, Column 2, first para:

Delete: Badische Uhrenfabrik, Phil Hauck, Andreas Huber, and Ideal Clock Co.

Note: Badische Uhrenfabrik started making torsion pendulum wall clocks under British Patent No. 7059 in 1904 as stated above. They sold clocks made by Jahresuhrenfabrik and Philipp Hauck bearing their "Crescent B" logo during that same time. After 1915 they sold clocks using Huber lantern pinion movements, but they did not make the clocks.

Note: Uhrenfabrik Philipp Hauck of Munich made torsion clocks running 200 and 400 days from 1903 thru 1914.

Note: The Andreas Huber Co. under the leadership of Joseph Huber obtained control of Harder's US and British patents from de Gruyter. They sold clocks made by Jahresuhrenfabrik (JUF) under an agreement similar to JUF's prior agreement with de Gruyter. For a time Huber controlled a world wide monopoly on 400 day clocks. After the Harder patents expired, Huber assembled and sold clocks made by JUF, Hauck, and Kienzle all bearing their "Urania" brand either printed on the dials or stamped on the back plates. Huber made clocks of their own design with lantern pinions and dead beat or pin pallet escapements starting in 1912. These clocks are found marked with Badische, Kienzle, and Huber logos, and the names of various importers.

Note: The "Ideal" Clock Co. was the trade name for Wilhelm Würth & Co. of Schwenningen. Würth made 400-day clocks from 1903 thru 1910.

Page 11, Column 1, para 6:

Delete: Kieninger & Obergfell, and Wintermantel Uhrenfabrik

Note: Kienninger und Obergfell (Kundo) began as a clock parts factory run by Johann Obergfell in 1899 in St. Georgen. Obergfell is credited with invention of the straight rod gong for clocks, DRGM 108469, in 1899. Obergfell partnered with George Kienninger in 1918 (forming Kundo) and began making 400 day clocks in 1923.

Note: Wintermantel Uhrenfabrik made 400-day clocks using JUF movements for several years begining in 1924.

Change: "Phillipp Haas" to "Philipp Hauck"

Note: Phillipp Haas & Söhne (PHS) did not make any 400-day clocks. All references to Phillipp Haas in this guide should be changed to Philipp Hauck.

Add: Wilhelm Würth

Page 11, Column 1, para 7:

Change: "Jahresuhrenfabrik 1905 catalog" to "Jahres-uhr catalog"

Page 14, column 1, para 3:

Pendulum guide cups were introduced by Kundo in 1933.

Section 3 History of Striking 400-Day Clocks

Page 22, Column 1, para 1:

Change: "STRIKING" to "STRIKE"

After: "center of dial" Change: comma to a period and Delete: remainder of sentence.

Add: Movements were based on de Gruyter UK Patent No 3724 (not shown in guide).

Para 2:

Change: "Schneckenburger" to "Schnekenburger" (two places)

Note: The references to duplex escapements made by Schnekenburger in this paragraph are incorrect. Research has determined that duplex escapement clocks were made by Carl Bauer, a cousin to the patent holder J. Christian Bauer (see Section 4, item 15).

Footnote 1

Change: "1473" to "1473A"

Footnote 2

Delete

Page 23, Column 2:

Change: "1905" to "1910"

Change: "Jahresuhrenfabrik catalog for 1905" to "1910 Jahres-Uhr Catalog"

Note: More complete discussions of Strikers can be found in eleven articles written by Mun Chor Weng and published in The Torsion Times.

Section 6 Some Outstanding Pre-World War I 400-Day Clocks

Page 33, Section 6 Tittle

Change "Pre-World War I" to "Pre-World War II"

Note: This sections shows clocks made and sold before and after WWI.

Page 35

Clock 20

Change: Plate "1617" to "1260"

Note: Clock 20 lists plate 1617 which is an early numbered JUF plate (c1906). Fortunately this clock is number 12 from the Horolovar Collection, and in that book the correct plate can be seen as 1260. Clock 20 is also a marriage of the JUF movement and pendulum with the base from a Huber/Badishe (200/201 from the Badishe 1924-25 catalog).

Pages 36-37

Note: The "1905 Jahresuhrenfabrik Catalog" referenced on these pages contains many clocks not made or sold by Jahresuhrenfabrik. The current belief is that the catalog is more likely a jobber's or wholesaler's catalog. Also the date associated with the catalog (1905) pre-dates by several years some of the items shown therein.

Section 9 400-Day Clock Back Plate Illustrations

Page 70, Column 2, para 2, last sentence:

Change: "have not been identified" to "were granted to the Andreas Huber Co. in 1911 and 1912 for the use of lantern pinions and pin pallet escapements in torsion pendulum clocks."

Page 73

Plate 1007

Philipp Hauck c1905-1906

Plate 1007A

Wilhelm Würth & Co.

Clocks with this plate would have had serial numbers.

Plate 1008

Wilhelm Würth & Co. c1910

Note: Clocks with this plate probably do not exist. The “MADE IN GERMANY” marking on this plate is not found with clocks bearing the Bowler & Burdick “Anniversary” stamps. Also the serial number is beyond the time that Würth provided clocks to B&B.

Page 74

Plate 1008A

Wilhelm Würth & Co.

Note: Clocks with this plate probably do not exist. The “MADE IN GERMANY” marking on this plate (ALL CAPS) is inconsistent with the serial number, and is not found with clocks bearing the Bowler & Burdick “Anniversary” stamps. This plate also has the same serial number as plate 1009. Bowler & Burdick clocks having the banking pins, shown on either side of the anchor depth adjustment, have been found but are otherwise marked identical to plate 1009.

Plate 1009

Wilhelm Würth & Co.

Plate 1009A

Wilhelm Würth & Co.

Clocks with this plate would have had serial numbers.

Plate 1009AA

Wilhelm Würth & Co. c1907

Page 76

Plate 1015

Andreas Huber Co. c1916

Page 77

Plate 1016A

Andreas Huber Co. c1911-1915

Page 78

Plate 1019

Andreas Huber Co. c1916

Plate 1019A

Andreas Huber Co. c1916

Page 82

Plate 1041

Andreas Huber Co. c1911-1915

Page 83

Plate 1043

Philipp Hauck c1904-1906

Plate 1049

Wilhelm Würth & Co. c1903-1905

Plate 1049A

Wilhelm Würth & Co.

Page 84

Plate 1053

Wilhelm Würth & Co.

Plate 1055

Philipp Hauck c1905-1906

Plate 1056

Philipp Hauck c1905-1906

Page 95

Plate 1150

Gershon Wintermantle & Co.

Page 97

Plate 1172

J. Christian Bauer c1901

DRP 120072

Page 98

Plate 1179

Jahesuhrenfabrik c1911

Page 110

Plate 1251

Andreas Huber Co.

Plate 1251A

Andreas Huber Co.

Page 112

Plate 1259

c1924-1927

Plate 1260

c1924-1927

Plate 1263

c1921-1923

Note: Serial number shown is out of range for JUF clocks. JUF produced less than 170,000 number clocks. First digit is probably a "1".

Plate 1264

c1923

Plate 1265

c1922-1924

Page 113

Plate 1267

c1922-1924

Page 114

Plate 1303, 1307

Carl Bauer c1896-1906

Page 117

Plate 1317

Schlenker & Posner c1928

4-Ball Pendulum 37

Use .0035” (.089mm) Horolovar

No Appendix entry

Plate 1318

Andreas Huber Co.

Page 125

Plate 1384

Andreas Huber Co.

Non-adjustable 4-ball pendulum 32

Appendix 96

Note: Plates 1384 and 1663 were used by Kienzle with the non-adjustable pendulum #32. The two screw holes to the right of the plate's centers are for the special suspension guard that slid down to capture the adjustable bottom block shown in appendix 96.

Plate 1385

Andreas Huber Co.

Plate 1387

Andreas Huber Co.

Page 126

Plate 1388

c1939

Page 134

Plate 1415

Philipp Hauck c1908-1913

Plate 1419

Philipp Hauck c1909

Plate 1423

Wilhelm Würth & Co.

Plate 1425

Philip Hauck c1906

Plate 1427

Wilhelm Würth & Co.

Delete: 4-ball pendulum

Page 135

Plate 1437

Wilhelm Würth & Co.

Plate 1438

Wilhelm Würth & Co.

Page 136

Plate 1440

Wilhelm Würth & Co.

Delete: 4-ball pendulum

Plate 1441

Philipp Hauck 1904

Plate 1443

Andreas Huber Co.

Page 137

Plate 1451

Jahesuhrenfabrik c1911

This drawing is missing the upper plate pillars, see plate 1179

Plate 1451A

Jahesuhrenfabrik c1914

This drawing is missing the upper plate pillars, see plate 1179

Page 138

Plate 1459

Philipp Hauck 1906

same as plate 1519

Page 143

Plate 1470E

Wendez-Metzger

Plate 1471

Jahesuhrenfabrik c1898-1903

Most clocks with this plate were sold by Andreas Huber

Some movements have a different location for the click screw

Disk pendulum 21

Page 146

Plate 1472H

Schlenker & Posner c1928

This plate is identified as “PS” but the logo stamp is actually an “S”

superimposed over a “P”

4-Ball Pendulum 37

Use .0035” (.089mm) Horolovar

Plate 1473

Carl Bauer c1896-1906

Plate 1473A

Carl Bauer c1896-1906

Note: Both plates 1473 and 1473A can be found with either bell striker or gong striker. Except for the difference in the serial number of these two plates, all the other makings are identical.

Plate 1473B

Carl Bauer c1896-1906

Note: This back plate is found with bell striker only and not with gong striker.

Page 149

Plate 1490

Schlenker & Posner c1928

4-Ball Pendulum 37

Use .0035” (.089mm) Horolovar

No Appendix entry

Page 150

Plate 1505

Schlenker & Posner c1928

4-Ball Pendulum 37

Use .0035” (.089mm) Horolovar

(19X38)

No Appendix entry

Page 151

Plate 1515

Andreas Huber Co. c1926

Plate 1519

Philipp Hauck 1906

same as plate 1459

Plate 1519A

Philipp Hauck 1906

Page 153

Plate 1522D

Philipp Hauck c1902-1903

Page 154

Plate 1527

c1924-1927

Plate 1529

Schlenker & Posner c1928

4-Ball Pendulum 37

Use .0035” (.089mm) Horolovar

No Appendix entry (19x38)

Page 155

Plate 1547

c1927-1939

Plate 1551

c1924-1927

Page 156

Plate 1559

Schlenker & Posner c1928

4-Ball Pendulum 37

Use .0035” (.089mm) Horolovar

No Appendix entry

Page 158

Plate 1579AA

Jahesuhrenfabrik c1924

Wintermantel Uhrenfabrik used JUF movements

Page 162

Plate 1595

c1927-1939

Plate 1595A

c1927-1939

Plate 1597

Jahesuhrenfabrik c1888

Page 163

Plate 1603

Wilhelm Würth & Co.

Delete: 4-ball pendulum

Plate 1607

Philipp Hauck 1906-1914

3-ball pendulum, not 4-ball

Plate 1610

Philipp Hauck 1903-1905

Plate 1613

Wilhelm Würth & Co.

Delete: 4-ball pendulum

Page 164

Plate 1614

Kern & Sohne

Schatz Jubilee clocks were made by Kern

Page 165

Plate 1621

Jahesuhrenfabrik

Plate 1623

Junghans

Page 166

Plate 1626

Wilhelm Würth & Co.

Plate 1627

Andreas Huber Co.

Plate 1628

Andreas Huber Co.

Page 167

Plate 1632

Philipp Hauck c1907

Plate 1633

Gustav Becker

Page 168

Plate 1643

Andreas Huber Co.

Page 169

Plate 1663

Andreas Huber Co.

Non-adjustable 4-ball pendulum 32

Note: Plates 1384 and 1663 were used by Kienzle with the non-adjustable pendulum #32. The two screw holes to the right of the plate's centers are for the special suspension guard that slid down to capture the adjustable bottom block shown in appendix 96.

Page 170

Plate 1667

Kern & Link 1929-1937

Kern & Sohne 1937-1950s

Page 172

Plate 1677

Andreas Huber Co.

Page 175

Plate 1699

Philipp Hauck c1906

Plate 1717

Andreas Huber Co.

Delete appendix 96

Page 177

Plate 1729, 1730 

Carl Bauer c1896-1906

Note: These two Plates are redundant as they are the same as plate 1473

Section 10 400-Day Clock Suspension Spring Unit Identification

Page 180

Unit 10C

12 Beats per Minute

 

Unit 10D

CHANGE: "made by Jahresuhrenfabrik" to "made by Kern and Söhne for Jahresuhrenfabrik,"

Same as Unit 11A

Section 13 About 400-Day Clock Pendulums

Page 194, column 2, last para, first sentence,

CHANGE: "1912" to "the late 1920s for most manufacturers."

ADD: "The Schlenker and Posner Co. offered a disc pendulum option on at least one of their models between 1928 and 1936."

Page 195

Pend 6

c1906

DRGM 276288

Also found with 4 large weights

Also found with no gallery

Pend 7

Wille/Würth c1903

DRP 144687

Pend 8

Andreas Huber Co. c1911

DRGM 453568

Pend 9

Andreas Huber Co. c1911

DRGM 453568

Pend 10

DRP 144688

Pend 13

Wilhelm Würth

Page 196

Pend 19

Philipp Hauck c1904

5 column gallery shown

Also found with 6 column gallery

 

Pend 20

Wilhelm Würth c1903

Used with Würth clocks

Kronen Drehpendel

 

Pend 23

Shown 1st of 5 versions

 

Pend 25

Wintermantel Uhrenfabrik c1924

Plate 1579AA

 

Pend 26

Philipp Hauck c1911

DRGM 471231

 

Pend 27

c1924-1939

NOT temperature compensating

DRGMs 868673, 74, 75

 

Pend 28

Andreas Huber Co. c1912

First version of two

 

Pend 32

Kienzle Clock Factories c1915

Plate 1384, 1663

Non-adjustable

Uses adjustable bottom block

 

Pend 33

c1915

 

Pend 34

c1929

2nd version of Becker 4-ball

 

Pend 37

Schlenker & Posner c1928-1937

 

Pend 38

Used with Huber pin pallet movements

 

Pend 39

c1909-1950

DRGM 403658

Page 197

Pend 47

c1933-1952

Note: There are two versions of this pendulum. The other version (not shown) has the same center ball finial as pendulum 35. Both versions are more commonly found with the Mayer Kundos from the 1930s, plate 1467.

Page 198

Pend 58

Pendulum pictured is missing top locking disk, See Pendulums 68 and 90.

Page 200

Pend 97

c1933-1952

Section 15 400-Day Clock Suspension Brackets and Saddles

Page 202

Brackets 1-3

Huber Std.

 

Bracket 11

Würth Std.

 

Bracket 12

Jahesuhrenfabrik Lunar

2nd version

 

Bracket 14

Würth Std. 1907 DRGM 302860

Used by Würth and Kienzle

 

Bracket 15

Huber “E” 1907 DRGM 319314

Used by JUF and Kienzle

JUF version shown

 

Bracket 16

Würth Std. 1907 DRGM 314710

 

Bracket 17

Hauck Std.

 

Bracket 18

Kienzle Std.

 

Bracket 27

Schlenker & Posner

1st version

Section 18 Appendix

Page 212

Appendix 10

CHANGE: Badische to Huber

ADD: plate 1384.

Note: It is not known if the statement in this appendix is even true, but now at least it identifies the right plates and maker.

Page 217

Appendix 63

DELETE: first sentence

ADD: "The anchor pivot hole for this plate is integrated into the suspension bracket. Escapement adjustment is lost when the suspension bracket is removed. Care should be taken to note the position of the suspension bracket prior to removal."

ADD: after "tightened." See Section 7 for escapement adjustment.

Page 231

Appendix 96

CHANGE: 1717 to 1384.

Page 235

Appendix 123, Unit 1

Design B was used Just before and after WWII.

 

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