US255909A - James ashee - Google Patents
James ashee Download PDFInfo
- Publication number
- US255909A US255909A US255909DA US255909A US 255909 A US255909 A US 255909A US 255909D A US255909D A US 255909DA US 255909 A US255909 A US 255909A
- Authority
- US
- United States
- Prior art keywords
- pendulum
- lever
- rod
- james
- ashee
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 229910001369 Brass Inorganic materials 0.000 description 4
- 239000010951 brass Substances 0.000 description 4
- 230000002459 sustained Effects 0.000 description 4
- 230000002301 combined Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/20—Compensation of mechanisms for stabilising frequency
- G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
- G04B17/225—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature with pendulums
Definitions
- the object of my invention is to compensate for the expansion and contraction of clockpendulums and their supporting parts, and thereby prevent irregularities in the clockmovement from the changes in the length of the pendulum.
- my invention consists in a compens-ation rod and lever, com bined with a clock frame and pendulum, as hereinafter described and claimed.
- A is the front plate of a clock-frame, which, as usual, is of brass, but may be of other metal.
- B is the pendulum, suspended by its flexible end strip, a, from the end of a lever, I), that is hung by a pin, 0, at its opposite end on plate A.
- e is a rod sustained in a vertical position by a metallic support,f, on frame A, and taking at its upper end beneath the lever I), at a point near pivot 0, so as to support the lever and pendulum.
- the lever 12 is of brass, or thesame metal as the frame A, and the rod 0 is preferably of zinc or other metal, whose coeflicient of expansion is greater than the metal used in its support f.
- This device is simple and inexpensive, and may be applied to the most common clocks as well as the finer ones with the same advantages.
Description
(No Model.)
J. ASHER.
GOMPEN'SATING PENDULUM.
No. 255,909. Patented Apr. 4,1882.
Q M d M fl/ & f
WITNESSES INVEN-TOR L 8 BY @Q/ ATTORNEYS.
UNITED STATES PATENT OFFICE.
JAMES ASHER, OF FORT ERIE, ONTARIO, CANADA.
COMPENSATING PENDULUM.
SPECIFICATION forming part of Letters Patent No. 255,909, dated April 4, 1882.
' Application filed January 13, 1852. (No model.)
T 0 all whom it may concern:
Be it known that I, JAMES ASHER, of Fort Erie, in the Province of Ontario and Dominion of Canada, have invented certain uset'ul Improvements in Compensating Pendulums, of which the following is a full, clear, and exact description.
The object of my invention is to compensate for the expansion and contraction of clockpendulums and their supporting parts, and thereby prevent irregularities in the clockmovement from the changes in the length of the pendulum.
To that end my invention consists in a compens-ation rod and lever, com bined with a clock frame and pendulum, as hereinafter described and claimed.
Reference is to be had to the HCCOlllpfllhYlllg drawing, forming part of this specification, which is a face view of a clock frame and pendulum provided with the compensatingdevice.
A is the front plate of a clock-frame, which, as usual, is of brass, but may be of other metal.
B is the pendulum, suspended by its flexible end strip, a, from the end of a lever, I), that is hung by a pin, 0, at its opposite end on plate A.
dis the usual splitstud on the plate,through which the suspension-strap a of the pendulum passes, and which is the center on which the pendulum swings.
e is a rod sustained in a vertical position by a metallic support,f, on frame A, and taking at its upper end beneath the lever I), at a point near pivot 0, so as to support the lever and pendulum. The lever 12 is of brass, or thesame metal as the frame A, and the rod 0 is preferably of zinc or other metal, whose coeflicient of expansion is greater than the metal used in its support f.
In operation, supposing the temperature to fall below the normal, the pcndulunrrod and the plate A contract. This, with the ordinary construction, would shorten the pendulum; but in this case the rod 0 also contracts and allows the lever b to drop, and the movement being multiplied on the outer end of the lever the distance between stud d and the outerend of the pendulum islengthened. The shortening by contraction is thus compensated, and it is evident that a reverse effect takes place when the pendulum and plate expand.
I do not limit myself to the described relative arrangement of the compensation rod and lever, nor to any special metals, as it is evident that those details may be varied within the scope of my invention. For adjustment, there may be set-screws fitted atoppositesides of the rod 0, as shown in dotted lines, so that the rod can be set back and forward, and the leverage thus varied.
This device is simple and inexpensive, and may be applied to the most common clocks as well as the finer ones with the same advantages.
Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. Aclock-pendulnm suspended from a lever above the center on which it swings, the lever being sustained on a com 'iensation-rod, substantially as shown and described.
2. The combination of rod 0, lever I), split stud d, and pendulum B, substantially as shown and described,-for the purposes specified.
3. The combination, with a pendulum, ot' a compensating-rod and a multiplying-lever connected for supporting the pendulum at apoint above its centerof oscillation, substantially as shown and described.
JAMES ASHER.
Witnesses:
WM. RAINSFORD, N. Fonsv'rnn.
Publications (1)
Publication Number | Publication Date |
---|---|
US255909A true US255909A (en) | 1882-04-04 |
Family
ID=2325198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US255909D Expired - Lifetime US255909A (en) | James ashee |
Country Status (1)
Country | Link |
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US (1) | US255909A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2833348A (en) * | 1958-05-06 | Integrating timer | ||
US20060075554A1 (en) * | 2001-01-02 | 2006-04-13 | Patent Category Corp. | Sleeping bag with enhancements |
-
0
- US US255909D patent/US255909A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2833348A (en) * | 1958-05-06 | Integrating timer | ||
US20060075554A1 (en) * | 2001-01-02 | 2006-04-13 | Patent Category Corp. | Sleeping bag with enhancements |
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