US1359597A

US1359597A - Multiple miter-clamp

Info

Publication number: US1359597A
Application number: US282546A
Authority: US
Inventors: Harry V Holman
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-03-14
Filing date: 1919-03-14
Publication date: 1920-11-23
Anticipated expiration: 1937-11-23

Description

H. V. HOLMAN.

MULTIPLE MITER CLAMP. APPLICATION FILED MAR. 14. 1919.

1,359,597. Patented Nov. 23, 1920.

/5 Z6 I p79 17 I a? lg Z E l 1' E i I l i l i /z 1 1 I l I I 1' l I I l J 4- 1 1 I v 1 i I I r l I 1 I 1 l /j HARRY V. HOLMAN, OF CHICAGO, ILLINOIS.

MULTIPLE MITER-GLAMP.

Specification of Letters Patent.

Patented Nov. 23, 1920.

Application filed March 14, 1919. Serial No. 282,546.

'1 o all to from it may concern Be it lrrown that I, HARRY V. HQLMAN, a citizen. of the United States of America, and resident of Chicago, Cook county, lilinois, have invented a certain new and useful Improvement in Multiple Miter-Clamps, of which the following is a specification.

My invention relates to an improvement in multiple miter clamps-that is, to a clamp which is particularly adapted for clamping a frame at a plurality of points to hold the same in position after the glue has been applied until it is sufficiently set to permit the frame to be handled in the usual manner.

The object of my invention is to provide a multiple clamp which can be quickly adjusted to the frame, and which is adapted for very accurate adjustment, such as is necessary in connection with fine cabinet work.

These and other features and objects of my invention will be more readily understood. by having reference to the accompanying drawings, in which I have illustrated one embodiment of my invention.

Figure 1 is a plan view of a multiple miter clamp, embodying my invention.

Fig. 2 is a sectional view taken on the line 22 of Fig. 1, looking in the direction of the arrows.

Fig. 3 is an enlarged detail of a form of my invention.

1 have illustrated a clamping device consisting of a clampin frame composed of a base member 10, side members 11 and 12, and an end member 13. This clamping frame is adapted to be placed about a piece of work M- which it is desired to hold in place while the glue is setting. The four corners of the clampingframe are adjustably connected together by clamping devices, each of which consist of a threaded spindle 15 whichpasses freely through openings in the adjacent end of the clamping frame members. The ends of each of these clamping frame members are bored laterally to receive a metallic pin 16. The threaded spindles 15 pass through transverse openings in these pins 16, and have threaded engagement therewith. Each of the spindles 15 is divided into two sections, one section being provided with a left-hand thread, and the other section with a right-hand threat, which sections engage with the corresponding metallic pins of adjacent clamping frame members, so that operation of these modified clamps operate to draw the adjacent memhere together. These pins are capable of pivotal movement in their bearing sockets, and thus permit relative angular movement of adjacent frame members. In order to increase the extent of this angular movement of the clamping members, the openings through the

members

10 and 11 and 10 and 12 are cut away or flared, as indicated in dotted lines in Fig. 1. Passing through the pins 16, associated with the upper end of the clamping members 11 and 12, there is a set screw 17 for the purpose of locking the corresponding spindles 15 in adjusted position. The corners between the

members

10 and 11 and 10 and 12 likewise are cut away, as in cheated at 18, to permit themembers 11 and 12 to pivot about the member 10, to thereby assist in the assembling of the clamping device.

When it is desired to apply my clamping device, the

members

10 and 11 and 10 and 12 are connected together by means of the corresponding threaded spindles, and the member 13 applied to the opposite ends of the members 11 and 12, but loosely connected thereto, as indicated in dotted lines in Fig. 1. The spindles 15, associated with the lower clamping members, are then suitably adjusted to draw the

members

11 and 13 and 12 and 18 together, the right and left hand threads of the spindle operating to accelerate this movement. Likewise, it. will be noticed that the handles 19, for operating these spindles, are relatively close together,

so that they can be easily operated simub taneously for adjusting the clamp. After these lower clamping members have thus been moved into position, the upper clamping members can be slightly adjusted, if necessary, to bring about a more accurate adjustment between the

members

10 and 11 and 10 and 12. l Vhen proper adjustment has been made, the set screws 17 can then be sightened to lock the clamp in position. In. order to prevent the glue, which is apt to be squeezed from the corners of the work,

sticking to the clamping frame members, the

corners of these members should be cut out to form a channel 20.

it will thus been seen that I have devised a very eflicient form of multiple clamp which is adapted to simultaneously hold the four corners of the work, and which can be quickly and accurately justed. When it is desired to release the two lower spindles by operating the handles 19 which moves the side clamping members 11 and 12 outwardly, indicated in dotted lines in Fig. 1, to thereby permit the clampmg device to be readily removed rrom the work.

In Fig. 3, I have shown a slightly modified form of my invention in which instead of having the threaded spindles pass directly through the clamping members, I provide castings 21, :22, secured to adjacent corners of the clamping members, which castings are provided with suitable ears which are provided with longitudinal bores for the passage of the threaded spindles, and, likewise torm bearings for the metallic pins l6 with which the threaded spindles 15 have threaded engagement. The advantage of this construction is that these clamping devices can be readily applied to clamping frames of varying sizes.

lVhile I have illustrated and described certain particular embodiments of my invention, it will be understood that I do not wish to be limited to the exact construction shown and described, but that various changes and modifications will readily suggest themselves to those skilled in the art Without departing from my invention.

What I claim as my invention is: r

1; A multiple clamp comprising a rectangular frame having side and end members, means for connecting one of said end memhers to one end of said side members, and adjustable means for connecting the other end member to the opposite end of said id members, said adjustable means consisting oi? a metallic pin journaled adjacent the abutting ends of each of said side and end members, and a threaded spindle passing transversely through said pins and having threaded engagement therewith.

2. A multiple clamp consisting of rectangular clamping frame having side and end members, adjustable clamping devices for connecting together adjacent ends of said side and end members, said clamping devices consisting of a metallic pin journaled adjacent the abutting ends of each of said side and end members, and a threaded spindle passing freely through the abutted ends of said frame members and having threaded engagement with the corresponding metallic pins to thereby permit relative adjustment or said frame members with re spect to each other.

3. A multiple clamp consisting of a rectangular clamping frame having side and end members, adjustable clamping devices for connecting together adjacent ends of said side and end members, said clamping devices consisting of a metallic pin journaled adjacent the abutting ends of said side and end members, and a threaded spindie passing freely through the abutting ends oi said frame members and having threaded engagcmei'it with the corresponding metallic pins to thereby permit relative adjustment oi said thror 11 certain of said frame members being flared or enlarged to thereby permit increased relative angular movement of said frame members with respect to each other. 4L. In a multiple clamp, an. end frame member, a pair of side frame members mounted adjacent the ends of said end member, means for connecting one end of each or". said side members to said end member, the outer portion of each of said abutting ends being cut away to permit said side members to pivot about the end member, and adjustable means for connecting the opposite ends of said side members.

5. In a clamp, a clamping frame consisting of abutting end and side members, means for connecting one end of each of said side members to the adjacent end member, the outer portion of each of said abutting ends being cut away to thereby permit said members to pivot about said end member, and a pair of threaded spindles j through the opposite ends of said hers and adjacent ends of the other s ,1, end member, said rods having oppositely di aosed threads engaging the side and end members, whereby rotation of said rods causes said second end member to be moved toward or away from said side members.

6. In a clamp, a clamping frame comprising end and sidemembers having abutting ends, metallic pins journaled adjacent the ends of each of said side members, a thread ed spindle passing transversely through the pins in adjacent end and side members for adjustably connecting said end and side members, the outside corners of one end of said frame being cut away whereby the operation of the threaded spindles, associated with the other end of said frame, operates to swing said side members about first end member without effecting the aejustment between said members.

Signed by me at Chicago, Illinois, this 1st day of March, 1919.

HARRY V. HOLMAN.

frame members, the openings