US2419270A - Parallel screw clamp - Google Patents

Parallel screw clamp Download PDF

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Publication number
US2419270A
US2419270A US543778A US54377844A US2419270A US 2419270 A US2419270 A US 2419270A US 543778 A US543778 A US 543778A US 54377844 A US54377844 A US 54377844A US 2419270 A US2419270 A US 2419270A
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United States
Prior art keywords
jaw
parallel
lever
screw clamp
jaws
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Expired - Lifetime
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US543778A
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John G Linnartz
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Individual
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Priority to US543778A priority Critical patent/US2419270A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/06Arrangements for positively actuating jaws
    • B25B5/10Arrangements for positively actuating jaws using screws
    • B25B5/109Arrangements for positively actuating jaws using screws with two screws, e.g. parallel screw clamps

Definitions

  • the present invention relates to new and useful improvements in clamps of the parallel jaw type, l
  • a device of this character comprising a novel construction and arrangement whereby, after the jaws have been adjusted as desired, said device may be conveniently used with one hand, thus leaving the other hand free to be used for inserting and removing the pieces to be held.
  • Another very important object of the invention is to provide a parallel jaw clamp of the aforementioned character which embodies unique means for closing the jaws for irmly gripping the work.
  • Figure 1 is a view in proved parallel jaw cl-amp constructed in accordance with the present invention.
  • Figure 2 is a view principally in longitudinal section through the device.
  • FIGS. 3 and 4 are views in transverse section, taken substantially on the lines 3-3 and 4 4, respectively, of Figure 1.
  • Figure 5 is a detail view in ⁇ perspective of the movable jaw.
  • Figure 6 is a detail View in perspective of the stationary jaw.
  • Figure 7 is a detail view in perspective of the lever.
  • the embodiment of the invention which has been illustrated comprises a pair of opposed, coacting, parallel stationary and movable jaws I and 2, respectively. Extending rearapertured rib 5. An angular lever 6 straddles the rib 5 and is pivotally connected thereto at I.
  • the ⁇ Adjustingscrews 8 and ,9 connect the jaws vI and 2.
  • the screw 8 is loosely and rotatably anchored at It in the stationary jaw I and intermediate portion of the screw 9 is threaded through of the movable jaw 2 and anchored at II in the lever movable jaw 2.
  • the the rear end portion has one end rotatably 6 at a point adj-acent the pivot 1 thereof.
  • a compression coil spring I2 extends between the rear end portion of the lever 6 and the handle S for setting the jaws I and 2 on the work.
  • a thumb screw Ii3 is threadedly mounted in the clampiunctions will be readily apparent from a consideration of the foregoing. Briefly, the jaws i and 2 are initially adjusted as desired in the usual manner through the medium of the .screws 3 and 9. While holding the device in one hand, the lever 6 is swung toward the handle 3 against the tension of the spring I2. With the other hand,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)

Description

April 2.2, 1947- J. G. LINNARTZ v 2,419,270
PARALLEL SCREW CLAMP.
Filed July 7, 1944 2v Sheets-sheet `1 E5 L '3 C Inventor By. vm@
April 22, 1947.
J. G. LINNARTZ PARALLEL SCREW CLAMP Filed July '7,' 1944 2 Sheets-Sheet 2 Inventor Patented Apr. 22, 1947 UNITED STATES :PATEN T- OFFICE PARALLEL SCREWCLAMP J ohn G. Linnartz, N ew'York, N. Y. Applicationuuly 7, 19in-serial No.-5i3;778
2 Claims.
'The present invention relates to new and useful improvements in clamps of the parallel jaw type, l
and has for its primary object to provide, in a manner as hereinafter set forth, a device of this character comprising a novel construction and arrangement whereby, after the jaws have been adjusted as desired, said device may be conveniently used with one hand, thus leaving the other hand free to be used for inserting and removing the pieces to be held. Y
Another very important object of the invention is to provide a parallel jaw clamp of the aforementioned character which embodies unique means for closing the jaws for irmly gripping the work.
Other objects of theinvention are to provide an improved parallel jaw clamp which will be comparatively simple in construction, strong, durable, highly eiicient and reliable in use, compact, light in weight and which may be manufactured at low cost.
All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specication, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:
Figure 1 is a view in proved parallel jaw cl-amp constructed in accordance with the present invention.
Figure 2 is a view principally in longitudinal section through the device.
Y Figures 3 and 4 are views in transverse section, taken substantially on the lines 3-3 and 4 4, respectively, of Figure 1.
Figure 5 is a detail view in `perspective of the movable jaw.
Figure 6 is a detail View in perspective of the stationary jaw.
Figure 7 is a detail view in perspective of the lever.
Referring now to the drawings in detail, it will be seen that the embodiment of the invention which has been illustrated comprises a pair of opposed, coacting, parallel stationary and movable jaws I and 2, respectively. Extending rearapertured rib 5. An angular lever 6 straddles the rib 5 and is pivotally connected thereto at I.
side elevation of an im- It is believed that the ` Adjustingscrews 8 and ,9 connect the jaws vI and 2. The screw 8 is loosely and rotatably anchored at It in the stationary jaw I and intermediate portion of the screw 9 is threaded through of the movable jaw 2 and anchored at II in the lever movable jaw 2. The the rear end portion has one end rotatably 6 at a point adj-acent the pivot 1 thereof.
A compression coil spring I2 extends between the rear end portion of the lever 6 and the handle S for setting the jaws I and 2 on the work. A thumb screw Ii3 is threadedly mounted in the clampiunctions will be readily apparent from a consideration of the foregoing. Briefly, the jaws i and 2 are initially adjusted as desired in the usual manner through the medium of the .screws 3 and 9. While holding the device in one hand, the lever 6 is swung toward the handle 3 against the tension of the spring I2. With the other hand,
under the influence of the coil spring I2 the members 9, 2 and 8 will be rocked relative to the stationary jaw l in thumb screw I3. To release the work it is only necessary to move the lever 6 tow-ard the handle 3 against the influence of the spring I2 with one hand and remove the work from between the jaws with the other hand.
Vtion to the through the movable jaw in spaced parallel relation to the nist-mentioned adjusting screw, the point of the second-mentioned adjusting screw being seated in the socket, and a compression spring extending between the end of the handle and the end of the lever remote from the pivot whereby the clamp jaws will be advanced toward closed position under yielding pressure. handle in longitudinal alignment with said stationary jaw, an adjusting screw rotatably and loosely mounted in and extending perpendicularly through the stationary jaw, a movable jaw threadedly carried by the adjusting screw for movement toward or away from the stationary jaw. a lever pivoted at one of its ends to the stationary jaw near its junction with the handle, said lever having a socket intermediate its ends adjacent its pivot, an adjusting screw threadedly extending through the movable jaw in spaced parallel relanrst-mentioned adjusting screw, the
REFERENCES CITED The following references are of record in the file of this patent: v
15 UNITED STATES PATENTS Number Name Date 946,152 Peglar Jan. 11, 1910 431,719 George July 8, 1890 423,992 Froelich. Mar. 25, 1890 20 1,519,210 McGuckin Dec. 16, 1924
US543778A 1944-07-07 1944-07-07 Parallel screw clamp Expired - Lifetime US2419270A (en)

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US543778A US2419270A (en) 1944-07-07 1944-07-07 Parallel screw clamp

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US2419270A true US2419270A (en) 1947-04-22

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431714A (en) * 1982-07-01 1984-02-14 The United States Of America As Represented By The United States Department Of Energy Fuel cell design and assembly
USD803021S1 (en) 2015-07-30 2017-11-21 Ming Chieh Wu Pliers
US20200368855A1 (en) * 2018-04-04 2020-11-26 Lg Chem, Ltd. Pressurization jig for pressurizing busbar and battery module manufacturing system comprising same
US11084234B2 (en) 2018-03-28 2021-08-10 Honda Motor Co., Ltd. Rapid repair of pneumatic tire with damage by cut or tear

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US423992A (en) * 1890-03-25 Clamping mechanism
US431719A (en) * 1890-07-08 Hand-screw
US946152A (en) * 1909-05-19 1910-01-11 Arthur R Peglar Clamp.
US1519210A (en) * 1924-03-20 1924-12-16 John J Mcguckin Assembling clamp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US423992A (en) * 1890-03-25 Clamping mechanism
US431719A (en) * 1890-07-08 Hand-screw
US946152A (en) * 1909-05-19 1910-01-11 Arthur R Peglar Clamp.
US1519210A (en) * 1924-03-20 1924-12-16 John J Mcguckin Assembling clamp

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431714A (en) * 1982-07-01 1984-02-14 The United States Of America As Represented By The United States Department Of Energy Fuel cell design and assembly
USD803021S1 (en) 2015-07-30 2017-11-21 Ming Chieh Wu Pliers
US11084234B2 (en) 2018-03-28 2021-08-10 Honda Motor Co., Ltd. Rapid repair of pneumatic tire with damage by cut or tear
US20200368855A1 (en) * 2018-04-04 2020-11-26 Lg Chem, Ltd. Pressurization jig for pressurizing busbar and battery module manufacturing system comprising same
US11660710B2 (en) * 2018-04-04 2023-05-30 Lg Energy Solution, Ltd. Pressurization jig for pressurizing busbar and battery module manufacturing system comprising same

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