US510774A - Saw-frame - Google Patents

Description

(No Model.)

B. GHAQUETTE. SAW FRAME.-

Patented Dec. 12, 1893.

.Ilfil.

NITE TATES' ATENT f FFICEO EPI-IRAIEM CI-IAQUETTE, OF BRIDGEPORT, CONNECTICUT.

SAW-FRAM E.

SPECIFICATION forming part of Letters Patent No. 510,774, dated December 12, 1893.

Aoplloationfiled September 16, 1893- Serial No. 485,704- (No model.)

To all whom it may concern.-

Be it known that I, EPHRAIEM CHAQUETTE, a c1t1zen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Saw-Frames 5 and I do hereby declare the following to be a full, clear, and exact description of the invent1on,such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain novel and useful lmprovements in saw frames, but more partlcularly to frames of the class used for holding and operating hack-saw and fret-saw blades.

The object of my invention is to providea saw-frame capable of longitudinal adj ustment, so that it may be used with different lengths of blades, inwhich frame the adj ustment may be very quickly and readily efiected, and which at the same time shall be exceedingly strong and rigid. In tools of this class the cost of manufacture is of the most v tal lmportance, and I have particularly anned to provide asaw-frame havingthe foregoing characteristics, which maybe produced and sold at the lowest possible price.

W1th the ends hereinbefore set forth in view, my mvention consistsin the construction and combination of elements hereinafter to be fully and in detail explained and then recited in the claims, and particularly in the combi-' nation of the two sections of the bow, each hav ng a laterally extending loop upon its end through which the body of the other section passes, and means for securing the sections together.

In order that those skilled in the art to which my invention appertains may fully understand its construction and method of operatlon, I will describe the same in detail, reference being had to the accompanyng drawings which form a part of this specification, and in which- Figure 1 is a side elevation; Fig. 2 a detail edge view looking from the top of Fig. 1; Fig. 3 a detail side elevation opposite to Fig. 1; Fig. 4, another detail side elevation showing a modified construction.

' The back or bowed portion of my saw frame straining screw 3 for tautening the saw blade,

and the outer end of the part 2 is furnished with any suitable handle.

a loop 5 which is turned outward at right angles to said part, so that, when assembled, each loop will closely embrace the body of the other part of the bow and form a bearing therefor, as will be readily understood from an inspection of Figs. 1 and 2. The section of the frame marked 2 is provided with a number of holes or sockets 6 adapted to receive a locking stud 7 which is mounted upon the other portion of the frame and is preferably held in locked position by means of a spring 8, but it is obvious that a set screw or other similar fastening might be substituted for this spring-actuated stud and still the same result be obtained.

In Fig. 4 I show a slightly modified construction, in which the two sections of the bow, instead of having the loops formed upon them, as shown in the preceding figures, are provided with outwardly ,extending ears 9 which, in the assemblage of the parts, are bent over to form bearings which operate substantially the same way as the loops, but this construction is inferior in strength and rigidity to the other and would be employed only for very cheap fret-saw frames.

I am aware that extensible frames of this character are not broadly new, and that a frame having functions analogous to those of the frame shown and described in this application is to be found in Letters Patent to W. C. Marston, No. 440,174, dated the 11th day of November, 1890. I do not wish to be understood as laying claim to anything found in this patent, but only to the peculiarities of my improved frame.

The inner ends of the parts 1 and 2 are provided each with formed at this time. The two strips are then assembled by passing each of them through the loops of the other, and afterward the outer ends are turned or bent down so that the two parts form the adjustable bow or back which the drawings show. The other necessary parts may then be attached.

The saw-frame thus formed is obviously very cheap in its construction, but at the same time it possesses greatstrength and durability, In changing it for the accommodation of saws of difierent lengths, the stud is lifted out of the socket, the two sections adjusted by sliding the two parts one upon the other until the frame is of the proper length and then reseating the stud.

What I claim, and desire to secure by Letters Patent, is

1. In an adjustable hack-saw frame, the bow consisting of the two overlapping sections each provided with a laterally projecting loop or eye encircling and forming a beariug for the other section, and a locking device mounted upon one of the sections and engaging the other section, substantially as shown and described.

2. In a hacksaw frame, the bow consisting of the overlapping sections 1 and 2, each provided with a laterally extended loop through which the other section passes, in combination with a spring-actuated locking device mounted upon one of the sections, and suitable sockets formed .in the other section for the reception of said locking device,substantially as and for the purpose specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EPI'IRAIEM CHAQUETTE.

\Vitnesses:

PAUL W. STEVENS, GEO. S. KNOPP.

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