US188637A - Improvement in coin-testers - Google Patents
Improvement in coin-testers Download PDFInfo
- Publication number
- US188637A US188637A US188637DA US188637A US 188637 A US188637 A US 188637A US 188637D A US188637D A US 188637DA US 188637 A US188637 A US 188637A
- Authority
- US
- United States
- Prior art keywords
- coin
- spring
- hammer
- lever
- disk
- 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
- 230000036633 rest Effects 0.000 description 2
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/005—Devices for testing the tool's performance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
Definitions
- My invention consists in the combination of a clamp for holding coin and a spring-actuated hammer for striking the same, the object being to provide a simple, compact, and yet effective instrument for testing coins by ringing them by means of a hammer while they are held by a clamp.
- Figure l is a side elevation of an instrument employing levers to clamp the coin.
- Fig. 2 is a side elevation of an instrument inwhich the coin is clamped by a follower.
- a B are crossed levers, pivoted together at a, having the arms b formed into handles, which are thrown apart by the spring D.
- a boss Upon the end of the lever A opposite its handle a boss, 0, is formed, and to the end of the lever B opposite its handle a spiral spring,
- 0 is a hammer fixed to a springarm, 0, that is attached to a disk, f, which is pivoted at g to the lever A.
- a pin it, projects from the back of the diskf, and is pressed by a spring, '6, that is secured in a recess in the lever A by a screw, j.
- a spring, It that projects from the-lever B, engages a notch cut in the disk f when the handles are forced together, and raises the hammer.
- the shoulder Z of the disk f throws the spring It out of the notch in the disk when the hammer is raised, and the spring 6, acting on the pin h, causes the hammer to descend.
- the spring-arm of l the hammer strikes pin m, that projects from the lever A, as the hammer descends, causing it to rebound after striking the coin.
- the coin to be tested is clamped between the boss 0 of the lever A and the spring d, attached to the lever B, by closing the handles together.
- This operation not only clamps the coin, but also partly raises the hammer.
- the pressure on the handles is increased until the hammer is raised through its full stroke and tripped.
- the sound emitted by the coin as it is struck by the hammer indicates its quality.
- Fig. 2 an instrument is shown differing in form from that above described, but acting on the same general principle.
- A is a yoke or U-shaped frame, which is bored to receive the follower b, and is provided with a boss, 0, upon which the coin rests.
- a short spiral spring, d is attached, between which and the boss 0 the coin is clamped.
- a spring, a is placed in the larger part of the bore of the frame A, and presses the shoulder of the follower b.
- f is a hammer, fixed to a spring-arm, g, that is attached to a disk, h, which is pivoted at i to the frame A.
- a notch, j is formed in the disk h, which receives a spring, is, that is attached at l to the frame A.
- 'A spring, m is attached to the follower b, and engages a notch, n, in the disk It.
- n a notch
- the follower is pressed downward the disk is turned, and the hammer raised until the shoulder 0 trips the spring m, permitting the hammer to fall and strike the coin, as in the other case.
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Description
G. M. HOPKINS.
COIN TESTER.
Patented March 20.1877.
WITNESSES N.PETERS, PHOTO LiTNQGRAPH W HING D C UNITED STATES PATENT OFFICE.
GEORGE M. HOPKINS, OF BROOKLYN, NEW YORK, ASSIGNOR TO HIMSELF AND CYRUS L. TOPLIFF, OF SAME PLACE.
IMPROVEMENT IN COIN-TESTERS.
Specification forming part of Letters Patent N 0. 188,637, dated March 20, 1877 application filed February 12, 1877.
To all whom t't may concern,-
Be it known that I, GEORGE M. HOPKINS,
- of Brooklyn, in the county of Kings and State of New York, have invented an Improved Coin-Tester, of which the following is a specification:
My invention consists in the combination of a clamp for holding coin and a spring-actuated hammer for striking the same, the object being to provide a simple, compact, and yet effective instrument for testing coins by ringing them by means of a hammer while they are held by a clamp.
In the drawing, Figure l is a side elevation of an instrument employing levers to clamp the coin. Fig. 2 is a side elevation of an instrument inwhich the coin is clamped by a follower.
A B are crossed levers, pivoted together at a, having the arms b formed into handles, which are thrown apart by the spring D. Upon the end of the lever A opposite its handle a boss, 0, is formed, and to the end of the lever B opposite its handle a spiral spring,
d, is attached. 0 is a hammer fixed to a springarm, 0, that is attached to a disk, f, which is pivoted at g to the lever A. A pin, it, projects from the back of the diskf, and is pressed by a spring, '6, that is secured in a recess in the lever A by a screw, j. A spring, It, that projects from the-lever B, engages a notch cut in the disk f when the handles are forced together, and raises the hammer. The shoulder Z of the disk f throws the spring It out of the notch in the disk when the hammer is raised, and the spring 6, acting on the pin h, causes the hammer to descend. The spring-arm of l the hammer strikes pin m, that projects from the lever A, as the hammer descends, causing it to rebound after striking the coin.
The coin to be tested is clamped between the boss 0 of the lever A and the spring d, attached to the lever B, by closing the handles together.
This operation not only clamps the coin, but also partly raises the hammer. The pressure on the handles is increased until the hammer is raised through its full stroke and tripped.
The sound emitted by the coin as it is struck by the hammer indicates its quality.
In Fig. 2 an instrument is shown differing in form from that above described, but acting on the same general principle.
A is a yoke or U-shaped frame, which is bored to receive the follower b, and is provided with a boss, 0, upon which the coin rests. To the inner end of the follower b a short spiral spring, d, is attached, between which and the boss 0 the coin is clamped. A spring, a, is placed in the larger part of the bore of the frame A, and presses the shoulder of the follower b. f is a hammer, fixed to a spring-arm, g, that is attached to a disk, h, which is pivoted at i to the frame A. A notch, j, is formed in the disk h, which receives a spring, is, that is attached at l to the frame A. 'A spring, m, is attached to the follower b, and engages a notch, n, in the disk It. As the follower is pressed downward the disk is turned, and the hammer raised until the shoulder 0 trips the spring m, permitting the hammer to fall and strike the coin, as in the other case.
Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination of a clamp for holding coin and a spring-actuated hammer for striking the same, substantially as herein shown and described.
2. The combination of the levers A B, spring 01, hammer C, and springs la 13, substantially as herein shown and described.
3. The combination of the U-shaped frame A, spring-follower b, hammer f, and springs k m, substantially as shown and described.
GEORGE M. HOPKINS. Witnesses:
H. M. HoPKms, O. L. TorLmr.
Publications (1)
Publication Number | Publication Date |
---|---|
US188637A true US188637A (en) | 1877-03-20 |
Family
ID=2258044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US188637D Expired - Lifetime US188637A (en) | Improvement in coin-testers |
Country Status (1)
Country | Link |
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US (1) | US188637A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2571409A (en) * | 1944-10-13 | 1951-10-16 | Continental Motors Corp | Metal defect testing method |
US11423727B2 (en) * | 2020-10-23 | 2022-08-23 | Farshod Kayyod | Coin pinger device for alloy authentication |
-
0
- US US188637D patent/US188637A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2571409A (en) * | 1944-10-13 | 1951-10-16 | Continental Motors Corp | Metal defect testing method |
US11423727B2 (en) * | 2020-10-23 | 2022-08-23 | Farshod Kayyod | Coin pinger device for alloy authentication |
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