US1015171A - Clamp. - Google Patents

Description

E. GOBLE.

' CLAMP.

APPLIOATION FILED SEPT. 12, 1911.

' Patented Jan. 16, 1912.

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E. GOBLE.

CLAMP.

APPLICATION-FILED SEPT. 12. 1911.

' Patented Jan. 16, 1912.

2 SHEETS-SHEET 2.

ELLSWORTH GOBLE, 0F LOUISVILLE, KENTUCKY.

CLAMP.

Specification of Letters Patent.

Patented Jan. 16, 1912.

Application filed September 12, 1911. Serial No. 648,880.

To all whom t may concern Be it known that I, ELLswoRTH GoBLE, a citizen of the United States, residing at Louisville, in the county of Jefferson and State of Kentucky, have invented new and useful Improvements in Clamps, of which the following is a specification.

An object of the invention is to provide a clamp, particularly adaptable for use in miter work, for mitering the struts of window casings and the like.

Among other features myinvention embodies a plurality of bases provided with uprights through which a serrated bar is slidably passed, a dog for locking engagement at one end of the bar and adapted to abut against one of the ends of the said bases, clamping members mounted on the bases and adapted to clampingly receive therebetween the bases which it is desired to miter, means for moving one of the said bases toward the other and means for permitting an adjustment of the clampingvmembers.

Reference is to be had to the accom'pfn'iying drawings constituting a part of this specification, in which similar charactersI of reference denote corresponding parts in all the views `and in which- Figure 1 is a perspective view of my device, the dotted lines denoting a pair of struts arranged on myvdevice and adapted to be mitered together. Fig. 2 is a vertical longitudinal sectional view taken on the line 2-2 in Fig. 1. Fig. 3 is a vertical longitudinal sectional view through one of the bases. Fig. 4 is a bottom plan view of one of the locking plates. Fig. 5 is a fragmentary plan view of one of the bases, one of the locking plates being shown in dotted lines in one of its positions thereon. Fig. 6 is a similar fragmentary plan view of one of the bases, with the locking plate shown in another position thereon.

Referring more particularly to the views, I provide bases 10, 11 to which are secured uprights 12 provided with apertures 13 through which a bar 14 is slidably extended, one end of the bar 14 being secured in a bearing block 15 dependingly arranged relatively to the bar and having a screw 16 threadedly passed therethrough, a handled crank 17 being connected with thc said screw for the purpose of turning the same so that the free end of the screw will be received in an indentation 18 in one side of the base 10.

Pivotally mounted on the bases 10, 11 are clamping members 19 and mounted to slide in grooves 20 in the bases 10,11 are adjusting plates 21 provided with slots 22, through which pins 23 are extended, clamping members 24, similar to the clamping members 19, being pivotally mounted on the adjusting plates 21. Secured to one side of each ,of the clamping members 19 and 24 are strips of sandpaper 25 for rigidly holding material between the respective clamping members 19 and 24 on each of the bases 10, 11 as shown in Fig. 1.

Extending upwardly from the bases 10, 11 are threaded pins 26 provided with thumb screws 27 and mounted on the pins 26 are locking plates 28, one side of each of the locking plates being adapted to abut against one of the clamping members 24 of each of the bases 10, 11 to limit the sliding movement of the adjusting plates 21. Tracks 29 are formed on the bases 10, 11 and the locking plates 28 are each provided with grooves 30, 31, the said grooves being adapted to receive the tracks 29 to retain the locking plates in rigid position on the bases 10, 11. By referring to Fig. 1, it will be seen that the groove 30 on each locking plate 28 receives the track 29 on each base 10, 11 thus permitting only a certain size piece of material being inserted between the clamping members 19 and 24 on the bases 10, 1l. When it is desired to move the Vadjusting plates 21, so that larger pieces of material can be accommodated between the clamping members 19 and 24 on each of the bases 10, 11, the locking plate on each base is rst removed therefrom by removing the thumb screws 27 and then by turning each of the said plates, the groove 31 of each plate will receivey the 'track 29 on the respective bases, thus permitting of sliding the adjusting plates 21, so as to provide a greater space between the clamping members 19 and 24 on each base, the mentioned locking plates 28 being eccentrically mounted on the bases 10, 11 and having angular sides to accomplish this result.

In the practical use of my device, the pieces to be mitered are mounted between the clamping members 19 and 24 on each of the bases 10, 11 with the ends of the pieces that are to be mitered abutting, a dog 32 being mounted to slide on the bar 14 and having a tooth 33 thereof received in a serration 34 in the base 11 with the upper end of the dog provided with a lug 35 adapted to repose in serrations 36 on the bar 14, thus limiting the outward sliding movement of the base 11 relatively to the bar 14, the dog 32 being held in rigid position on the bar by the lug 35 reposing in one of the serrations 36 with an extension 37 ot the dog abutting against the under side of the bar 14, a pin 38 being provided on the bar to prevent the dog 32 from becoming disengaged from the bar. The crank 17 is now turned by means of a handle thereon, thus operating the screw 16 so that the tree end thereof will be received in the indentation 18 on the base 10 and consequently the base 10 will be moved toward the base 11, thus retaining the ends of the materials which are to be mitered in abutting posit-ion, it being understood that the mentioned ends are preferably glued previous to their insertion between the clamping members 19 and 24. Thus when the glue on the pieces of material becomes dry, the said pieces of material will be securely y mitered together and can be taken from the clamp by simply unscrewing the screw 16 from the base 10, thus permitting of sliding the base relatively to the bar 14.

From the foregoing description, it will be seen that a reliable and etlicient clamp is produced and although I have described the clamping members 19 and 24A as provided with sandpaper 25, it will be understood that the clamping members can be serrated or roughened to accomplish the same purpose as the sandpaper.

Having thus fully described the invention, what I claim as new, is

1. A clamp comprising a plurality of bases, uprights secured to the said bases, a bar slidably extended through the said uprights, clamping members pivotally mounted on the said bases, adjusting plates mounted to slide on the said bases, clamping members mounted to swing on the said adjusting plates, means for locking the said adjusting plates, serrations formed on the said bar, a locking dog mounted on the serrated end of the said bar and adapted for locking engagement with one of the said bases and a screw having connection With the said bar and adapted for engagement with the `other base to move the said other base relatively to the said bar.

2. A clamp comprising a plurality of bases, uprights secured to the said bases, a bar mounted to slide on the said uprights, clamping members mounted on the said bases and adapted to receive connectible pieces of material therebetween means for moving one of the said bases toward the other said base and means for retaining the said other base in rigid position relatively to the said baru 3. A clamp comprising a plurality of bascs.l uprights secured to the said bases, a bar mounted to slide on the said uprights, a dog mounted on the said bar and adapted for locking engagement with one of the said bases, means for sliding the other said base relatively to the said bar and clamping means for releasably retaining pieces of material in clalnping engagement with the said bases.

4. In a clamp the combination of a base, a second base, uprights extended from the said bases, a bar slidably mounted on the said uprights, clamping members on t-he said bases and adapted to clamp pieces of material thereto, means for locking the second mentioned base relatively to the said bar and a screw having connection with the said bar and adapted to engage the first mentioned base to move the same relatively to the second mentioned base.

5. In a clamp the combination of a base, a second base, uprights extended from the said bases, a bar mounted to slide on the said uprights, means for locking the firstmentioned base relatively to the said bar, means for moving the first mentioned base on the said bar, clamping members pivotally mounted on the said bases, adjusting plates mounted to slide on the said bases and clamping members pivotally mounted on the said adjusting plates.

In testimony whereof I aiiix my signature in presence of two witnesses.

ELLSVVORTH GOBLE. Vitnesses JOHN D. CLAUSEN, PETER ROSENBERGER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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