US2619136A - Rectangular framework clamp - Google Patents

Rectangular framework clamp Download PDF

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Publication number
US2619136A
US2619136A US172802A US17280250A US2619136A US 2619136 A US2619136 A US 2619136A US 172802 A US172802 A US 172802A US 17280250 A US17280250 A US 17280250A US 2619136 A US2619136 A US 2619136A
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Prior art keywords
clamp
bar
bar members
members
ends
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Expired - Lifetime
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US172802A
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John D Nash
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John D Nash
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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
    • B25B5/14Clamps for work of special profile
    • B25B5/142Clamps for work of special profile for windows and frames

Description

Nov. 25, 1952 J. D. NASH 2,619,136

RECTANGULAR FRAMEWORK CLAMP Filed July 10, 1950 John 0. Nash v INVENTOR.

Patented Nov. 25, 1952 UNITED STATES PATENT OFFICE RECTANG LAR F ORK CLAMP John D. Nash, Boston, Mass.

application July 10, 1950, Serial No. 172,802

2 Claims.

Th en ion relat s t oms g neral a more a i ul to a r c an ar cl mp orthe use of cabinet makers, woodworkers and the like.

A primary object of this invention is to provide a clamp which can be used for grasping an object on two opposing sides or allfour sides of a rectangular objfict.

Another object of this invention is to provide a clamp of rectangluar form, two of the main bar members being hinged together, While two more bar members are slidably mounted on the first mentioned bar member for movement relative thereto and substantially normal thereto, and the hinged members have reduced inside corner portions adjacent the hinge connection, so that the corresponding co n r 9i Wo k cla ped in h clamp will not be damaged.

Another object of this invention is to provide a rectangular clamp in which all the parts are connected together, thus preventing the making of the clamp inoperative by the loss of a component part.

A last object to be mentioned specifically is to provide a, clamp of the character mentioned above, which is relatively inexpensive and practicable to manufacture, which is safe, simple and convenient to use under many difierent conditions, and which will give generally efiicient and durable service.

With these objects definitely in view, this invention resides in certain features of construction, combination and arrangement of elements and portions as will be hereinafter described in detail in the specification, particularly pointed out in the appended claims, and illustrated in the accompanying drawing which forms a material part of this application, and in which:

Figure 1 is a view of the assembled clamp, in perspective Figure 2 is a vertical sectional view taken on the line 22 of Figure 1;

Figure 3 is a fragmentary vertical sectional view taken on the line 33 in Figure 1;

Figure 4 is a fragmentary top plan view of one corner portion of the device; and

Figure 5 is a vertical sectional view taken on the line 5--5 of Figure 4.

Similar characters of referencedesignate similar or identical elements and portions throughout the specification and throughout the different views of the drawing.

Referring now to the drawing in detail, this invention includes four main bar members, which will be referred to as the first bar member It, the second bar member l2, the third bar member 14 and the fourth bar member I6. The first bar 2 member ha a e uc d p rt on 18 htehh d its d a d a hh tiqh ?9 9 the fi thar hi h her '0 ha a hal 1hr hihh hoh sc ioh, hd s ted at with an a .QP PFQn O th SfiQPilQ ar ber 12- A P vbt P i 24 xtend thro h the a ed rorhhhs that s, thr u h h rh ihhs i nd 6- 'It 1. 91 9 he care l y hh hd ha th i h ah ion is very limit d. how ver an tha h firs an se o d bar membe s w a l ime e ret d ub antiall norma to a h e he Th rs has techno ba membe s hav hd toa tihe end orhhhs P ov in a n r ea an ke 38 a ia hht ai hin e t nn stioh, so t a the hh e hchq h h rhe f t work am ed in theqhv he w l ho be ammed nd thus dama ed The .se qhsi and third ba th hers a d '4 are Pro id d w th o ud nal y e din lots 9 ahd 3? host a each nd ah e first and PW 5%! members a o de h en r ed headed nds 4 ah 3 hi e t e u d rt h httrmedi te h n o h first and fourth members are received in the slots 39 and 3? t eing not d tha a similar n a ed aded end 38 oh th eh 0 t e t u th ba 191 1- ber remote from the terminal 36 is arranged in opposing relation to a terminal portion 40 of the first member l0. Elongated threaded clamping bolts 42, having heads 44 and wing nuts 46 extend through apertures provided in opposing pairs of ends of the second and third bar members l2 and I l. Similar clamping bolts 48 extend through apertures in the headed ends 34 and 3S and the headed ends 38 and 40, respectively.

The bar members may be said to comprise two pairs and those of the first pair are denoted by the numerals l2 and I4 while those of the second pair are denoted by the numerals l0 and I 6. The slot 32 accommodates the reduced and headed end 38 while the slot 30 accommodates the respective heads 34 and 36 and their adjacent reduced ends. The enlarged headed ends of the bar members It and I8 of the second pair are such as to permit the assembling as Well as the disassembling of the over-all clamping frame; that is, each headed end (34, 36 and 38) is enlarged in only one transverse direction or dimension, the other transverse dimension or crosssection being slightly less than the width of the coacting assembling and retaining slot.

The clamp operates in the following manner. For the purpose of this explanation it is assumed that a rectangular object (herein referred to as the work) is to be clamped with pressure on each of its four sides, although, if desired, two or more plates, or in fact any similar objects,

3 could be clamped together while utilizing only two of the four sides of the clamp.

The work is introduced into the clamp so that all four sides or bars of the clamp surround the work. One corner of the work is then moved into the point where the bars or sides I and I2 are joined by the rivet-bolt at 24. The corner of the work does not come into contact with the clamp, thus protecting it from damage. Side bar I9 is then moved in until it meets the work and the wing nuts are run up to fix the position of this side. The triple-threaded action of the wing nuts and bolts speed up this operation measurably. Side bar 14 is then moved to the desired position, and in like manner its position is also fixed. Then, with a carpenters framing square, try-square or some similar tool, exact adjustments may be made by tightening or loosening one or more of the wing nuts.

Having described the invention, what is claimed as new is:

1. A work clamp comprising a clamping frame characterized by four complemental bar members arranged in two distinguishable pairs, the bar members of the first pair being commensurate in length with each other and disposed in opposed spaced parallelism and each bar member having a guide and assembling slot therein terminating at its ends inwardly of the respective outer ends of said bar member, a second pair of a spaced bar members also opposed to each other and disposed in substantial parallelism with each other but at right angles to the bar members of the first named pair and having reduced intermediate body portions and enlarged headed ends,

one end portion of one of the bar members of the first named pair having a notch therein and the corresponding end of one of the bar members of the second named pair having a notch therein, the respective notched ends being overlapped and interlocked by way of the cooperating notches and providing a hinging connection between the respective notched bar members, the reduced portion of said one bar member at the end opposite to said notch extending through the slot in the second one of said first named pair of bar members with the headed end projecting outwardly of the face of said latter bar member, the reduced end portions of the second bar member of said second named pair of bar members extending through the slots in the respective bar members of said first named pair of bar members with the cooperating headed ends projecting outwardly of the faces of latter bar members, said headed ends being enlarged only in one transverse dimension and the other transverse dimension being less than the widths of said slots to facilitate assembling and disassembling of said frame, and manually regulable means connecting the respective bar members of the first and second pairs with one another.

2. The structure defined in claim 1 wherein a. hinge pin serves to permanently join the respective notched ends of the stated bar members and wherein the coacting interior surfaces of the corner provided by said hinged ends are relieved and thus reduced to define the work corner clearance pocket, and wherein the adjustable connecting means between the bar members of the respective pairs comprises, in each instance, a bolt connected at one end with a coacting end of a coacting bar member and having its opposite end provided with a thumb nut and operatively connected with a corresponding end of the complemental bar member.

JOHN D. NASH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 903,996 Markham Nov. 17, 1908 1,149,241 Wooton Aug. 10, 1915 1,209,761 Roos Dec. 26, 1916 FOREIGN PATENTS Number Country Date 36,881 Denmark Dec. 5, 1926

US172802A 1950-07-10 1950-07-10 Rectangular framework clamp Expired - Lifetime US2619136A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753902A (en) * 1953-01-19 1956-07-10 George B Klee Screw actuated rectangular frame work clamp
US4211391A (en) * 1978-06-24 1980-07-08 Peter Strasser Clamping frame for making rectangular frames, particularly picture frames
WO1980002396A1 (en) * 1979-04-30 1980-11-13 Caterpillar Tractor Co Fixture and method for repairing track links
US20060197269A1 (en) * 2005-03-04 2006-09-07 Downey Curtis W Drawer clamp

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US903996A (en) * 1908-01-27 1908-11-17 Charles M Markham Form for concrete construction.
US1149241A (en) * 1913-11-29 1915-08-10 John A Wooton Ice-dividing mechanism.
US1209761A (en) * 1916-03-25 1916-12-26 Henry W Roos Clamping mechanism.
DK36881A (en) * 1980-01-28 1981-07-29 Hepar Ind Inc A process for preparing low molecular weight heparin

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US903996A (en) * 1908-01-27 1908-11-17 Charles M Markham Form for concrete construction.
US1149241A (en) * 1913-11-29 1915-08-10 John A Wooton Ice-dividing mechanism.
US1209761A (en) * 1916-03-25 1916-12-26 Henry W Roos Clamping mechanism.
DK36881A (en) * 1980-01-28 1981-07-29 Hepar Ind Inc A process for preparing low molecular weight heparin

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753902A (en) * 1953-01-19 1956-07-10 George B Klee Screw actuated rectangular frame work clamp
US4211391A (en) * 1978-06-24 1980-07-08 Peter Strasser Clamping frame for making rectangular frames, particularly picture frames
WO1980002396A1 (en) * 1979-04-30 1980-11-13 Caterpillar Tractor Co Fixture and method for repairing track links
US20060197269A1 (en) * 2005-03-04 2006-09-07 Downey Curtis W Drawer clamp

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