US1741923A - Screw clamp - Google Patents
Screw clamp Download PDFInfo
- Publication number
- US1741923A US1741923A US347120A US34712029A US1741923A US 1741923 A US1741923 A US 1741923A US 347120 A US347120 A US 347120A US 34712029 A US34712029 A US 34712029A US 1741923 A US1741923 A US 1741923A
- Authority
- US
- United States
- Prior art keywords
- screw clamp
- lever
- branch
- angle rail
- screw
- 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
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 241000287181 Sturnus vulgaris Species 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/16—Details, e.g. jaws, jaw attachments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/06—Arrangements for positively actuating jaws
- B25B5/10—Arrangements for positively actuating jaws using screws
- B25B5/102—Arrangements for positively actuating jaws using screws with at least one jaw sliding along a bar
Definitions
- the invention relates to a screw clamp in which the arm that constitutes the bearing for the clamping screw is arranged as a lever, to which an adjustable forked arm, that is provided on the longer branch of the angle rail, is connected by means of a pivot on j which the lever with the clamping screw can rotate, the free, upper end of the lever being provided with teeth which prevent the forked arm from slipping on the angle rail when objects are clamped in the device.
- the invention provides for a pin which is passed through the shorter branch of the angle rail and bent downwards on both ends so as to form a foot on which the screw clamp rests when standing in a vertical position.
- Figure 1 is a side elevation of the screw clamp
- Figure 2 a plan view of the same
- Figure 3 is a front elevation of the forked and lever arms alone showing the connection between these two parts
- Figure 4 a screw clamp on a smaller scale standing up in a vertical position.
- the forked arm 6 is guided on the longer branch of the angle rail a and connected with the lever c by means of the pivot (Z in such a manner that the lever can be rotated.
- the clamping screw 0 with the handle f on one end and a clamping jaw g on the other end is arranged in the lower end of the lever c in the usual manner.
- the clamping plate It is provided on the shorter branch of the angle rail a oppositethe clamping jaw g.
- the lever c rotates in the direction indicated by the arrow :0 on the pivot d until the clamping action is attained by means of turning the clampingscrew the lever c then takes up the pressure generated and transfers it, by rotating in the direction indicated by the arrow 3 as a counter pressure by means of the teeth on its upper end onto the rail a, so that the lever becomes firmly positioned and the forked arm cannot slip on the angle rail.
- the pin 2' which is firmly located in the shorter branch of the angle rail, is bent clownward on both ends so as to form a foot upon which the screw clamp may stand in the position as shown in Figure 4.
- the single parts of the device are to be preferably made of hardened steel, which is particularly advantageous for the surfaces between the lever c and the angle rail against premature wearing away of the material.
- a screw clamp comprising, in combination, a lever arm connected so as to be rotatable, with an adjustable forked arm provided on the longer branch of the angle rail of a screw clamp, the free, upper end of the said lever being provided with teeth adapted to engage against the inner surface of said longer angle rail branch and to hold said adjustable forked arm firmly located in any r given position on said rail branch, said lever arm being provided with a clamping screw having a handle and a clamping jaw and means for holding said screw clamp standing in a vertical position, substantially as set forth.
- a screw clamp comprising, in combination, a lever arm connected, so as to be rotat able, with an adjustable forked arm provided on the longer branch of the angle rail of a screw clamp, the free, upper end of said lever being provided with teeth adapted to engage against the inner surface of said longer angle rail branch and to hold said adjustable forked arm firmly located in any given position on the said rail branch, said lever arm being provided with a clamping screw having a handle and a clamping jaw, a pin through the shorter branch of said angle rail, said pin being bent down on both ends to form a foot adapted to hold said screw clamp standing in a vertical position, substantially as described.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Description
Dec. 31, 1929. J. IDOHNAL 1,741,923
SCREW CLAMP Filed March 14, 1929 Patented Dec. 31, 1929 UNIT stares JAN IDOHNAL, F DOZBRIS, CZECHOSLOVAKIA SCREW CLAMP Application filed March 14, 1929, Serial No.
The invention relates to a screw clamp in which the arm that constitutes the bearing for the clamping screw is arranged as a lever, to which an adjustable forked arm, that is provided on the longer branch of the angle rail, is connected by means of a pivot on j which the lever with the clamping screw can rotate, the free, upper end of the lever being provided with teeth which prevent the forked arm from slipping on the angle rail when objects are clamped in the device. As it is necessary for certain classes of work to have the screw clamp standing in a vertical position the invention provides for a pin which is passed through the shorter branch of the angle rail and bent downwards on both ends so as to form a foot on which the screw clamp rests when standing in a vertical position.
In the accompanying drawing the invention is illustrated in one form by way of example in which Figure 1 is a side elevation of the screw clamp, Figure 2 a plan view of the same, Figure 3 is a front elevation of the forked and lever arms alone showing the connection between these two parts, and Figure 4 a screw clamp on a smaller scale standing up in a vertical position.
The forked arm 6 is guided on the longer branch of the angle rail a and connected with the lever c by means of the pivot (Z in such a manner that the lever can be rotated. The clamping screw 0 with the handle f on one end and a clamping jaw g on the other end is arranged in the lower end of the lever c in the usual manner. The clamping plate It is provided on the shorter branch of the angle rail a oppositethe clamping jaw g.
When any object is to be clamped between the clamping plate and the clamping in the screw clamp, the lever c rotates in the direction indicated by the arrow :0 on the pivot d until the clamping action is attained by means of turning the clampingscrew the lever c then takes up the pressure generated and transfers it, by rotating in the direction indicated by the arrow 3 as a counter pressure by means of the teeth on its upper end onto the rail a, so that the lever becomes firmly positioned and the forked arm cannot slip on the angle rail.
347,120. and. in Germany January 31, 1928.
The pin 2' which is firmly located in the shorter branch of the angle rail, is bent clownward on both ends so as to form a foot upon which the screw clamp may stand in the position as shown in Figure 4. The single parts of the device are to be preferably made of hardened steel, which is particularly advantageous for the surfaces between the lever c and the angle rail against premature wearing away of the material.
I claim:
1. A screw clamp, comprising, in combination, a lever arm connected so as to be rotatable, with an adjustable forked arm provided on the longer branch of the angle rail of a screw clamp, the free, upper end of the said lever being provided with teeth adapted to engage against the inner surface of said longer angle rail branch and to hold said adjustable forked arm firmly located in any r given position on said rail branch, said lever arm being provided with a clamping screw having a handle and a clamping jaw and means for holding said screw clamp standing in a vertical position, substantially as set forth.
2. A screw clamp, comprising, in combination, a lever arm connected, so as to be rotat able, with an adjustable forked arm provided on the longer branch of the angle rail of a screw clamp, the free, upper end of said lever being provided with teeth adapted to engage against the inner surface of said longer angle rail branch and to hold said adjustable forked arm firmly located in any given position on the said rail branch, said lever arm being provided with a clamping screw having a handle and a clamping jaw, a pin through the shorter branch of said angle rail, said pin being bent down on both ends to form a foot adapted to hold said screw clamp standing in a vertical position, substantially as described.
J AN DOHNAL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1741923X | 1928-01-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1741923A true US1741923A (en) | 1929-12-31 |
Family
ID=7741402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US347120A Expired - Lifetime US1741923A (en) | 1928-01-31 | 1929-03-14 | Screw clamp |
Country Status (1)
Country | Link |
---|---|
US (1) | US1741923A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3441265A (en) * | 1966-10-28 | 1969-04-29 | Herman Albert | Adjustable clamp |
US3914830A (en) * | 1974-02-08 | 1975-10-28 | Robert Benjamin Bolton | Tools having locking adjustments |
US6123326A (en) * | 1997-07-29 | 2000-09-26 | Kleinbongartz & Kaiser | Clamping tool |
US20040102792A1 (en) * | 2002-08-09 | 2004-05-27 | Sarin Vineet Kumar | Non-imaging tracking tools and method for hip replacement surgery |
US20080217830A1 (en) * | 2007-03-08 | 2008-09-11 | Bessey Tool Gmbh & Co. Kg | Device for applying pressure to a workpiece |
US20090026681A1 (en) * | 2006-02-21 | 2009-01-29 | Bessey Tool Gmbh & Co. Kg | Device for applying pressure to a workpiece and clamping tool |
US20090025192A1 (en) * | 2007-07-26 | 2009-01-29 | Bessey Tool Gmbh & Co. Kg | Clamp |
US20100156015A1 (en) * | 2007-07-04 | 2010-06-24 | Bessey Tool Gmbh & Co. Kg | Clamp and process for the production of a clamp |
-
1929
- 1929-03-14 US US347120A patent/US1741923A/en not_active Expired - Lifetime
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3441265A (en) * | 1966-10-28 | 1969-04-29 | Herman Albert | Adjustable clamp |
US3914830A (en) * | 1974-02-08 | 1975-10-28 | Robert Benjamin Bolton | Tools having locking adjustments |
US6123326A (en) * | 1997-07-29 | 2000-09-26 | Kleinbongartz & Kaiser | Clamping tool |
US20040102792A1 (en) * | 2002-08-09 | 2004-05-27 | Sarin Vineet Kumar | Non-imaging tracking tools and method for hip replacement surgery |
US8002772B2 (en) * | 2002-08-09 | 2011-08-23 | Kinamed, Inc. | Non-imaging tracking tools and method for hip replacement surgery |
US20090026681A1 (en) * | 2006-02-21 | 2009-01-29 | Bessey Tool Gmbh & Co. Kg | Device for applying pressure to a workpiece and clamping tool |
US8313095B2 (en) * | 2006-02-21 | 2012-11-20 | Bessey Tool Gmbh & Co. Kg | Device for applying pressure to a workpiece and clamping tool |
US20080217830A1 (en) * | 2007-03-08 | 2008-09-11 | Bessey Tool Gmbh & Co. Kg | Device for applying pressure to a workpiece |
US8267389B2 (en) * | 2007-03-08 | 2012-09-18 | Bessey Tool Gmbh & Co. Kg | Device for applying pressure to a workpiece |
US20100156015A1 (en) * | 2007-07-04 | 2010-06-24 | Bessey Tool Gmbh & Co. Kg | Clamp and process for the production of a clamp |
US20090025192A1 (en) * | 2007-07-26 | 2009-01-29 | Bessey Tool Gmbh & Co. Kg | Clamp |
US8439339B2 (en) * | 2007-07-26 | 2013-05-14 | Bessey Tool Gmbh & Co. Kg | Clamp |
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