US125419A - Improvement in bracket-sheaves - Google Patents
Improvement in bracket-sheaves Download PDFInfo
- Publication number
- US125419A US125419A US125419DA US125419A US 125419 A US125419 A US 125419A US 125419D A US125419D A US 125419DA US 125419 A US125419 A US 125419A
- Authority
- US
- United States
- Prior art keywords
- bracket
- sheaves
- improvement
- sheave
- straffin
- 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
- 238000004519 manufacturing process Methods 0.000 description 6
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
Definitions
- my invention consists in combining, ⁇ with an open sheave-block, a plate at right angles to the plane of the pulley, said plate being provided with screw or nail-holes by means of which the sheave may be fastened to the post or support; the whole being an article of manufacture.
- Figure l is a perspective view of my invention.
- Fig. 2 is a vertical section of the saine.
- A represent the pulley held by the open block B, the block B being open at D so that the line may be easily put in position.
- E is a plate cast at right angles to the block B, and is provided with screw or nai1-holes H H H, by which the sheave is to be made fast to the support.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Chairs Characterized By Structure (AREA)
Description
CHARLES H. STRAFFIN.-
'Imp'rrovemen'f Brr'acknet Sheave.
Patented April 9I 1872.
INvENTon 'UNITED STATES PATENT OFFICE.
CHA RL S H. STRAFFIN, OF BOSTON, ASSIGNOR TO HIMSELF AND JAMES H. PARKER, OF NATICK, MASSACHUSETTS.
IMPROVEMENT IN BRACKET-SHEAVES.
Specification forming part of Letters Patent No. 125,419, dated April 9, 1872.
To all whom t may concern:
l I, CHARLES H. STRAFFIN, of Boston, in the county of Suffolk and State of Massachusetts, have invented a certain new and useful Bracket-Sheave, of which the'following is a specification:
The N atnre of the Invention.
The nature of my invention consists in combining, `with an open sheave-block, a plate at right angles to the plane of the pulley, said plate being provided with screw or nail-holes by means of which the sheave may be fastened to the post or support; the whole being an article of manufacture.
n Description of the Accompany/ing Drawing.
Figure l is a perspective view of my invention. Fig. 2 is a vertical section of the saine. General Description. Let A represent the pulley held by the open block B, the block B being open at D so that the line may be easily put in position. E is a plate cast at right angles to the block B, and is provided with screw or nai1-holes H H H, by which the sheave is to be made fast to the support.
I am aware that open sheaves have been made before; and I therefore conine myself to the cast metallic bracket-slleave as an article of manufacture.
I claim as my invention- The cast metallic sheave as an article ofl manufacture, consisting of the parts A B E, substantially as described, and for the purpose set forth.
CHARLES H. STRAFFIN. l
Witnesses:
J. L. NEWTON, F. G. PARKE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US125419A true US125419A (en) | 1872-04-09 |
Family
ID=2194848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US125419D Expired - Lifetime US125419A (en) | Improvement in bracket-sheaves |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US125419A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2489679A (en) * | 1945-09-25 | 1949-11-29 | Sherry Robert | Safety pulley |
-
0
- US US125419D patent/US125419A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2489679A (en) * | 1945-09-25 | 1949-11-29 | Sherry Robert | Safety pulley |
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