US2390022A - Hold-down clamp - Google Patents

Hold-down clamp Download PDF

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Publication number
US2390022A
US2390022A US545153A US54515344A US2390022A US 2390022 A US2390022 A US 2390022A US 545153 A US545153 A US 545153A US 54515344 A US54515344 A US 54515344A US 2390022 A US2390022 A US 2390022A
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United States
Prior art keywords
link
lever
pivotally
frame
work
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Expired - Lifetime
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US545153A
Inventor
Sterling A Wood
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to US545153A priority Critical patent/US2390022A/en
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Publication of US2390022A publication Critical patent/US2390022A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • B25B5/104—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element
    • B25B5/108—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element the screw contacting one of the ends of the lever
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S409/00—Gear cutting, milling, or planing
    • Y10S409/903—Work holder

Definitions

  • the present invention relates to new and useful improvements in hold down clamps adapted for attaching to a work bench, machine table or other supporting structure and embodying the provision of a screw operated lever designed to exert the necessary pressure on the work for holding the same in a desired position.
  • An important object of the present invention is to provide adjusting means for the clamp by means of which work of a wide range in size may be suitably clamped in position.
  • a still further object is to provide a device of this character of simple and practical construction, which is efficient and reliable in performance, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.
  • Figure 2 is a top plan view.
  • Figure 3 is a view in front elevation.
  • Figure 4 is a sectional view taken substantially on a line 4-4 of Figure 1, and
  • Figure 5 is a fragmentary group perspective view of the adjustable link connection between the screw and the lever.
  • the numeral 5 designates a frame generally which includes a front post 6, rear post 1 and upper and lower members 8 and 9 connecting the posts.
  • the lower frame member 9 is adapted for attaching to the machine table II] of a drill press, or other suitable supporting structure by means of a bolt and nut l I.
  • the front post 6 is formed with a plurality of vertically spaced openings l2 adapted for selectively receiving a pin l3 on which a lever I4 is pivotally mounted at its intermediate portion.
  • the lever I4 is formed of a pair of spacedparallel arms, having their front ends secured in spaced apart relation by means of an'angle iron brace H, the arms being positioned at opposite sides of the post 6.
  • the rear ends of the arms are formed with offsets 18 to more closely space the inner ends of the arms and are connected by a bolt l9 freely inserted in a slotted opening 20 formed in a link 2
  • the rear end of *the link is pivoted on a pin 22 selectively positioned in vertically spaced openings 23 in the rear post 1.
  • the front end of the link 2i is formed with a slotted opening 24 positioned in the bifurcated lower end of a head 25 and pivotally secured thereto by means of a pin 29.
  • the head 25 is formed on the lower end of a screw 26 which is threaded through the upper frame member 8 and provided at its upper end with a manipulating wheel '2'! having a hub 28 threaded on the screwabove the frame member 8 whereby the turning of the wheel will cause the vertical movement of the screw through the frame member.
  • the lower edge of the arms are preferably rounded as shown at 29 by means of which a better clamping engagement is afforded with the work during the adjustment of the clamping lever l4.
  • may be adjusted vertically in the frame 5 in accordance with the size of the work to be clamped.
  • a hold down clamp comprising a frame in cluding front and rear posts, means for securing the frame to a supporting structure, a clamping lever, means for pivotally attaching the clamping lever at an intermediate portion thereof in vertically adjusted position to the front post, a link, means for pivotally attaching one end of the link in vertically adjusted position to the rear post, means for pivotally connecting the rear end of the clamping lever to an intermediate portion of the link and a manually operable screw mounted for vertical movement in the frame and pivotally attached to the other end of said link.
  • a hold down clamp comprising a frame including front and rear posts, means for securing the frame to a supporting structure, a clamping lever, means for pivotally attaching the clamping lever at an intermediate portion thereof in vertically adjusted position to the front post, a link, means for pivotally attaching one end of the link in vertically adjusted position to the rear post, means for pivotally and slidably connecting the rear end of the clamping lever to an intermediate portion of the link and a manually operable screw mounted for vertical movement in the frame and pivotally and slidably attached to the other end of said link, said clamping lever having a rounded free end and adapted for movement into contacting engagement with work positioned on the supporting structure.

Description

I Nov. 27, -1 945. WQ D 2,390,022
HOLD DOWN CLAMP Filed July 15, 1944 2 Sheets-Sheet l my. I 22 Inventor J'ieriz By WM e p Nov. 27, 1945. s. A. WOOD HOLD DOWN CLAMP Filed July 15, 1944 2 Sheets-Sheet 2 Inventor By Q2... 1
Patented Nov. 27, 1945 UNITED STATES PATENT OFFICE 2 Claims.
The present invention relates to new and useful improvements in hold down clamps adapted for attaching to a work bench, machine table or other supporting structure and embodying the provision of a screw operated lever designed to exert the necessary pressure on the work for holding the same in a desired position.
An important object of the present invention is to provide adjusting means for the clamp by means of which work of a wide range in size may be suitably clamped in position.
A still further object is to provide a device of this character of simple and practical construction, which is efficient and reliable in performance, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.
Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which- Figure 1 is a side elevational view.
Figure 2 is a top plan view.
Figure 3 is a view in front elevation.
Figure 4 is a sectional view taken substantially on a line 4-4 of Figure 1, and
Figure 5 is a fragmentary group perspective view of the adjustable link connection between the screw and the lever.
Referring now to the drawings in detail wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention, the numeral 5 designates a frame generally which includes a front post 6, rear post 1 and upper and lower members 8 and 9 connecting the posts.
The lower frame member 9 is adapted for attaching to the machine table II] of a drill press, or other suitable supporting structure by means of a bolt and nut l I.
The front post 6 is formed with a plurality of vertically spaced openings l2 adapted for selectively receiving a pin l3 on which a lever I4 is pivotally mounted at its intermediate portion.
The lever I4 is formed of a pair of spacedparallel arms, having their front ends secured in spaced apart relation by means of an'angle iron brace H, the arms being positioned at opposite sides of the post 6. The rear ends of the arms are formed with offsets 18 to more closely space the inner ends of the arms and are connected by a bolt l9 freely inserted in a slotted opening 20 formed in a link 2|.
The rear end of *the link is pivoted on a pin 22 selectively positioned in vertically spaced openings 23 in the rear post 1.
The front end of the link 2i is formed with a slotted opening 24 positioned in the bifurcated lower end of a head 25 and pivotally secured thereto by means of a pin 29. The head 25 is formed on the lower end of a screw 26 which is threaded through the upper frame member 8 and provided at its upper end with a manipulating wheel '2'! having a hub 28 threaded on the screwabove the frame member 8 whereby the turning of the wheel will cause the vertical movement of the screw through the frame member.
The lower edge of the arms are preferably rounded as shown at 29 by means of which a better clamping engagement is afforded with the work during the adjustment of the clamping lever l4.
By reason of the connection of the screw 26 with the front end of the link 2| and the connection of the rear end of the clamping lever 14 with the intermediate portion of the link a compound leverage action is provided for the free end of the clamping lever M to produce an increased clamping pressure on the work engaged thereby.
In the operation of the device the work is placedon the machine table 19 under the rounded ends 29 of the clamping lever and by raising the screw 26 upwardly the free end of the lever 24 will be moved downwardly into clamping engagement with the work.
The lever 14 and link 2| may be adjusted vertically in the frame 5 in accordance with the size of the work to be clamped.
It is believed that the details of construction and manner of use of the device will be readily understood from the foregoing without further explanation.
Having described the invention, what is claimed 1. A hold down clamp comprising a frame in cluding front and rear posts, means for securing the frame to a supporting structure, a clamping lever, means for pivotally attaching the clamping lever at an intermediate portion thereof in vertically adjusted position to the front post, a link, means for pivotally attaching one end of the link in vertically adjusted position to the rear post, means for pivotally connecting the rear end of the clamping lever to an intermediate portion of the link and a manually operable screw mounted for vertical movement in the frame and pivotally attached to the other end of said link.
2. A hold down clamp comprising a frame including front and rear posts, means for securing the frame to a supporting structure, a clamping lever, means for pivotally attaching the clamping lever at an intermediate portion thereof in vertically adjusted position to the front post, a link, means for pivotally attaching one end of the link in vertically adjusted position to the rear post, means for pivotally and slidably connecting the rear end of the clamping lever to an intermediate portion of the link and a manually operable screw mounted for vertical movement in the frame and pivotally and slidably attached to the other end of said link, said clamping lever having a rounded free end and adapted for movement into contacting engagement with work positioned on the supporting structure.
STERLING A. WOOD.
US545153A 1944-07-15 1944-07-15 Hold-down clamp Expired - Lifetime US2390022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US545153A US2390022A (en) 1944-07-15 1944-07-15 Hold-down clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US545153A US2390022A (en) 1944-07-15 1944-07-15 Hold-down clamp

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US2390022A true US2390022A (en) 1945-11-27

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515877A (en) * 1947-07-14 1950-07-18 Marathon Coal Bit Company Inc Cam-operated pivoted-jaw clamp having plural positions for cam and jaw fulcrums
US2571559A (en) * 1947-08-15 1951-10-16 Tacitus W Gaillard Tool post
US2661783A (en) * 1949-12-22 1953-12-08 Henry E Caston Quickly attachable or removable surface clamp
US2755758A (en) * 1952-03-07 1956-07-24 Us Industries Inc Locking clamp
US3035830A (en) * 1954-06-18 1962-05-22 O D Scarborough Machine for milling and removing inhibitors from propellant grain
US3062530A (en) * 1959-09-17 1962-11-06 Charles D Shoulders Engine supporting jig
US3168286A (en) * 1961-12-06 1965-02-02 Ronald H Rickert Jack head assembly
US3515367A (en) * 1967-09-13 1970-06-02 Ziaylek Theodore Jun Hose clamp
DE2754964A1 (en) * 1976-12-29 1978-07-06 Paul Eckli Tubular workpiece clamping device - comprises two blocks connected by threaded spindle and coupled to two-armed levers in frame with clamping jaws
DE3705269A1 (en) * 1986-02-20 1987-08-27 Carver & Co Eng Adjustable clamping device and accessories thereof
DE3613644A1 (en) * 1986-04-23 1987-10-29 Josef Gerhard Tuenkers POWER DRIVEN TOGGLE TENSIONER
DE3925956C1 (en) * 1989-08-05 1990-07-26 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De Bench clamp for workpiece fixture - has multi-arm swivelling jaws activated by lever attached to body

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515877A (en) * 1947-07-14 1950-07-18 Marathon Coal Bit Company Inc Cam-operated pivoted-jaw clamp having plural positions for cam and jaw fulcrums
US2571559A (en) * 1947-08-15 1951-10-16 Tacitus W Gaillard Tool post
US2661783A (en) * 1949-12-22 1953-12-08 Henry E Caston Quickly attachable or removable surface clamp
US2755758A (en) * 1952-03-07 1956-07-24 Us Industries Inc Locking clamp
US3035830A (en) * 1954-06-18 1962-05-22 O D Scarborough Machine for milling and removing inhibitors from propellant grain
US3062530A (en) * 1959-09-17 1962-11-06 Charles D Shoulders Engine supporting jig
US3168286A (en) * 1961-12-06 1965-02-02 Ronald H Rickert Jack head assembly
US3515367A (en) * 1967-09-13 1970-06-02 Ziaylek Theodore Jun Hose clamp
DE2754964A1 (en) * 1976-12-29 1978-07-06 Paul Eckli Tubular workpiece clamping device - comprises two blocks connected by threaded spindle and coupled to two-armed levers in frame with clamping jaws
DE3705269A1 (en) * 1986-02-20 1987-08-27 Carver & Co Eng Adjustable clamping device and accessories thereof
DE3613644A1 (en) * 1986-04-23 1987-10-29 Josef Gerhard Tuenkers POWER DRIVEN TOGGLE TENSIONER
DE3925956C1 (en) * 1989-08-05 1990-07-26 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De Bench clamp for workpiece fixture - has multi-arm swivelling jaws activated by lever attached to body

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