US2238831A - Work holding clamp - Google Patents
Work holding clamp Download PDFInfo
- Publication number
- US2238831A US2238831A US262725A US26272539A US2238831A US 2238831 A US2238831 A US 2238831A US 262725 A US262725 A US 262725A US 26272539 A US26272539 A US 26272539A US 2238831 A US2238831 A US 2238831A
- Authority
- US
- United States
- Prior art keywords
- frame
- work
- plate
- thumb screw
- holding clamp
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
Definitions
- 'Ihis invention relates to a work holding clamp and has for an object to provide a work holding clamp comprising an elongated frame of U-shape in cross section having set screws to hold a pressure plate in position against the work, and also having a thumb screw to restrict endwise movement of the work in the frame and prevent loss of the pressure plate from the frame.
- a further object is to provide a device of this character which will be formed of a few simple and durable parts which will be inexpensive to manufacture and which will not easily get out of order.
- Figure 1 is a front elevation of the clamp showing a piece of material held securely in the frame.
- Figure 2 is a longitudinal sectional view of the clamp taken on the line 2-2 of Figure l.
- Figure 3 is an end elevation of the clamp shown in Figure 1.
- I designates a work bench and II designates a board or other work.
- the frame is provided with openings I3 in the bottom to receive screws 8 to secure the frame to the Work bench III or the like.
- a thumb screw I4 is located at one end of the frame I2 and passes freely through an opening I5 ⁇ in the front side of the frame.
- the thumb screw is threadedly engaged in an opening I6 in the rear side of the frame.
- Short set screws Il are threadedly engaged in openings in the front side of the frame.
- a combined pressure and protecting plate I8 is located within and extends longitudinally of the frame I2 and is provided with an opening I9 of larger diameter than the thumb screw through which the thumb screw Il passes loosely7 to permanently connect the pressure plate to the frame I2.
- the plate I8 serves to protect the work from being damaged by the short set screws Il and also holds the work secured in the frame.
- the thumb screw I4 forms a stop to limit end- ⁇ wise movement of the work in the frame.
- the plate I8 clamps the work to the rear side of the frame I 2 when the set screws Il are tightened.
- a tapered or wedge-shaped piece of work may be clamped by the plate to the rear side of the frame.
- the opening I9 being of larger diameter than the thumb screw permits the plate to pivot on the thumb screw when tapered work is to be clamped in the frame.
- a Work holding clamp comprising an elongated frame of U-shape in cross section, a thumb screw disposed at one end of the frame passing freely through an opening in the front side of the frame and screw threadedly engaged in an opening in the rear side of the frame, said thumb screw extending transversely across the U-shaped frame and forming a stop to limit endwise sliding movement of a piece of work longitudinally between the sides of the frame, set screws engaged through the front side of the frame, and a combined pressure and protecting plate against which the set screws exert pressure to clamp the work to the rear side of the frame, said plate being adapted to be adjusted by tightening one set screw and loosening the other set screw to pivot the plate on the thumb screw to hold tapered or wedge-shaped work, said plate being disposed within and extending longitudinally of the frame, said plate being provided with an opening of larger diameter than the thumb screw to receive the thumb screw and permit the thumb screw to slidably and pivotally and permanently connect the plate to the frame.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Description
April 15, 1941. A STEACH 2,238,831l
WORK HOLDING CLAMP Filed March 18, 1959 INVENTOR ATTO R N EYS Patented Apr. 15, 1941 UNITED STATES PATENT OFFICE WORK HOLDING CLAMP Alexander Steach, Dedham, Mass.
Application March 18, 1939, Serial No. 262,725
1 Claim.
'Ihis invention relates to a work holding clamp and has for an object to provide a work holding clamp comprising an elongated frame of U-shape in cross section having set screws to hold a pressure plate in position against the work, and also having a thumb screw to restrict endwise movement of the work in the frame and prevent loss of the pressure plate from the frame.
A further object is to provide a device of this character which will be formed of a few simple and durable parts which will be inexpensive to manufacture and which will not easily get out of order.
With the above and other objects in View the invention consists of certain novel details ol construction and combinations of parts hereinafter fully described and claimed, it being understood that various modifications may be resorted to within the scope of the appended claim without departing from the spirit or sacrificing any of the advantages of the invention.
In the accompanying drawing forming part of this specification,
Figure 1 is a front elevation of the clamp showing a piece of material held securely in the frame.
Figure 2 is a longitudinal sectional view of the clamp taken on the line 2-2 of Figure l.
Figure 3 is an end elevation of the clamp shown in Figure 1.
Referring now to the drawing in which like characters of reference designate similar parts in the various views, I designates a work bench and II designates a board or other work.
The clamp comprising the subject matter of this invention comprises an elongated frame I2 of U-shape in cross-section. The frame is provided with openings I3 in the bottom to receive screws 8 to secure the frame to the Work bench III or the like. A thumb screw I4 is located at one end of the frame I2 and passes freely through an opening I5` in the front side of the frame. The thumb screw is threadedly engaged in an opening I6 in the rear side of the frame. Short set screws Il are threadedly engaged in openings in the front side of the frame.
A combined pressure and protecting plate I8 is located within and extends longitudinally of the frame I2 and is provided with an opening I9 of larger diameter than the thumb screw through which the thumb screw Il passes loosely7 to permanently connect the pressure plate to the frame I2. The plate I8 serves to protect the work from being damaged by the short set screws Il and also holds the work secured in the frame.
The thumb screw I4 forms a stop to limit end-` wise movement of the work in the frame.
In operation the plate I8 clamps the work to the rear side of the frame I 2 when the set screws Il are tightened. When one of the set screws is tightened and the other set screw is loosened, a tapered or wedge-shaped piece of work may be clamped by the plate to the rear side of the frame. The opening I9 being of larger diameter than the thumb screw permits the plate to pivot on the thumb screw when tapered work is to be clamped in the frame.
From the above description it is thought that the invention will be fully understood without further explanation.
What is claimed is:
A Work holding clamp comprising an elongated frame of U-shape in cross section, a thumb screw disposed at one end of the frame passing freely through an opening in the front side of the frame and screw threadedly engaged in an opening in the rear side of the frame, said thumb screw extending transversely across the U-shaped frame and forming a stop to limit endwise sliding movement of a piece of work longitudinally between the sides of the frame, set screws engaged through the front side of the frame, and a combined pressure and protecting plate against which the set screws exert pressure to clamp the work to the rear side of the frame, said plate being adapted to be adjusted by tightening one set screw and loosening the other set screw to pivot the plate on the thumb screw to hold tapered or wedge-shaped work, said plate being disposed within and extending longitudinally of the frame, said plate being provided with an opening of larger diameter than the thumb screw to receive the thumb screw and permit the thumb screw to slidably and pivotally and permanently connect the plate to the frame.
ALEXANDER STEACH;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US262725A US2238831A (en) | 1939-03-18 | 1939-03-18 | Work holding clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US262725A US2238831A (en) | 1939-03-18 | 1939-03-18 | Work holding clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2238831A true US2238831A (en) | 1941-04-15 |
Family
ID=22998753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US262725A Expired - Lifetime US2238831A (en) | 1939-03-18 | 1939-03-18 | Work holding clamp |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2238831A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2703594A (en) * | 1951-05-17 | 1955-03-08 | Slinkard Raymond | Door holding stand with spring actuated clamping means |
| US2737215A (en) * | 1951-12-29 | 1956-03-06 | Charles O Larson | Clamp and method of making the same |
| US3241181A (en) * | 1964-03-02 | 1966-03-22 | Goodrich Co B F | Hose curing unit |
| US3367375A (en) * | 1966-03-23 | 1968-02-06 | James A. Watson Jr. | Stake forming apparatus |
-
1939
- 1939-03-18 US US262725A patent/US2238831A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2703594A (en) * | 1951-05-17 | 1955-03-08 | Slinkard Raymond | Door holding stand with spring actuated clamping means |
| US2737215A (en) * | 1951-12-29 | 1956-03-06 | Charles O Larson | Clamp and method of making the same |
| US3241181A (en) * | 1964-03-02 | 1966-03-22 | Goodrich Co B F | Hose curing unit |
| US3367375A (en) * | 1966-03-23 | 1968-02-06 | James A. Watson Jr. | Stake forming apparatus |
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