US1521098A - File gauge - Google Patents

Description

Dec. 1924. 1,521,098

. w. HILTON FILE GAUGE Filed Dec. 31, 1923 INVEN TOR Patented so. 30, 1924.

WILLIAM HILTON, OF SEATTLE, WASHING-EON.

FILE GAUGE.

Application filed December 31, 1923. Serial No. 683,642.

To all whom it may concern:

Be it known that I, lVILLIAM HiL'roiv, a subject of the King of Great Britain, residing at Seattle, county of King, and State of Vashington, have invented new and useful Improvements in a File Gauge; and I do hereby declare that the following is a full, clear, and exact specification, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention is a device for filing and gauging .aws in which the file, which is supported in a sliding bracket may be held at any desired angle in relation to the saw.

The invention is an improvement over my prior application for a file gauge which was filed Sept. 22, 1923 with the Serial No. 664,314, in that a gauge is provided for holding the teeth of a saw at uniform width, more etficient clamps are provided for holding the brackets in which the rods upon which the file carriage slides are held, a sliding sleeve is provided for supporting the file carriage, and removable bushings are provided for holding the file.

The object of the invention is to provide a file gauge which has a sliding carriage for the file with a means whereby the file may be held at any desired angle in relation to the saw.

with these ends in view theinvention embodies a block having grooves in it through which the saw blade may be placed, a frame attached to the block in such a manner that it may be set at different angles in relation to the block, sliding brackets in which a file maybe held, and particularly means for holding the saw' at uniform intervals, a sliding sleeve upon which the file bracket mounted, and removable bushings torholding the file.

Other features and advantages of the invention will be seen from the following description taken in connection with the drawi ngs, wherein Figure 1 is a side elevation.

Figure 2 is a plan view.

Figure 3 is a sectional view on line 33 of Figure 1.

Figure 4 is a section similar to that shown in Figure 3 showing an alternate means For clamping a bracket to the block.

Figure 5 is a sectional view showing a side view of the clamp shown in Figure 4.

Figure 6 is a view showing the gauge for holding the saw teeth at regular intervals.

Figure 7 is a view showing another alternate arrangement for holding the bracket to the block.

In the drawings I have shown my file gauge as it would appear wherein numeral 1 indicates the block, numeral 2 the bracket, and numeral 3 the file carriage.

The block 1 is made of a piece of sheet metal or any other suitable material and made in the term of a rectangular shaped shell with one end wider than the other and one side open. The interior is filled with a block, which may be of wood or any suitable material, which has a straight out through its center as indicated by the lines 4: which show the position of a rip saw over which the block may be placed while it is being filed; and diagonal cuts through it as indicated by the dotted lines 5 and 6 through which cross cut saws may be placed while being filed. In the metallic sides are slots 7, which have enlarged openings 8 at their upper ends and beveled surfaces 9 at the lower edge of the openings which should have a slope similar to that of the saw teeth. The slots 7 are placed at the ends of the cuts 4, 5, and 6 so that the saw will pass through them.

At the sides of the block are gauges 10 which engage the teeth of the saw and hold it while it is being filed. The gauges 10 are made of flat pieces of material with beveled edges 11 and 12 which engage the saw teeth, and projections 13 and 14- which may be bent around a groove 15 in the head of a screw 16 which may be screwed into a hole between the enlarged portions 8 of two of the slots 7 so 'thatas they are turned on one side of the screw they will engage the teeth of the saw that may be placed in the center slot and when they are turned on the opposite side they will engage a saw placed through one of the diagonal slots.

The bracket 2 may be constructed with flat pieces of material 1'? bent as shown in Figure 1 and having openings 18 in enlarged sections 19 at the ends by which. the bracket may be held to the block. The ends are held by thumb screws 20 that may he placed through the openings 18 and screwed into the ends of the block or into nuts, lugs, or enlarged portions on the insides of the ends as may be desired. The upper ends 21 of the flat pieces of material 17 are provided with holes into which a bar 22 having; a guide bar 23 may be placed, he saw car-v riage 3 is slidably mounted on the bar 22 through a sleeve 24: upon which the hubs 25 of the arms 26 are rigidly held by set screws 27. Projections 28 with recesses 29 in them will extend outward from the arms 26 and the recesses 29 of these projections will engage the guide bar 23 when the carriage is in the filing position. The file which I have indicated by the numeral 30 may be held in sleeves 31 having triangular shaped openings 32 in them and these sleeves are held in openings in hubs 33 at the outer ends of the arms 26 by set screws 34. It will be seen that by moving the handle 35 on the end of the file backward and forward the file carriage will slide backward and forward on the rod 22, and by swinging the carriage over to the opposite side of the block it will be possible to obtain the same movement and file the saw on that side.

Figures 4: and 5 show an alternate means flanges which may be clamped to the ends of the block by screws 36 passing through pins 37 in the flanges. It will be seen that by loosening the screws 36 it will be possible to twist the bracket to any desired angle in relation to the block.

The enlarged sections 19 of the flat pieces of material 17 may be provided with points 38 as shown in Figure 3 which may 'be set opposite graduation marks 39 on the ends of the block so that it will be possible to set the file bracket at any given angle.

In the design shown in Figure 7 the ends ofthe bracket 17 are provided with slots 40 through which the thumb screws 36 in the slots 41 may pass. It will be seen that as the thumb screws are tightened they will hold the brackets 17 against the ends of the block andby adjusting the screws it will be possible to hold the brackets in any desired position.

It will be understood that changes may be made in the construction without departing from the spirit of the invention. One of which changes may be in the design of the block, as it is understood that this may be made square or of any desired shape; an-

other may be in the shape of the slots through the block; another may be in the design of the brackets or in the means for stood from the foregoing description.

holding them to the block; and still another may be in the design of the carriage for holding the file.

The construction Will be readily under- To use the device it may be assembled as shown and the block 1. placed over the saw; as shown in Figures 2 and 3 and it will be seen that the brackets may be adjusted so that the file will rest between the saw teeth. It will also be seen that by moving the saw backward or forward and setting the gauge 10 between two of the teeth it will be possible to hold the saw at regular intervals or in such positions that each or every other tooth may be filed without resetting the gauge. The sleeves 31 in the file carriage will make it possible to remove and replace a file as often as may be desired.

Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent, is: V

1. A file gauge having a block with straight and diagonal slots through it; a gauge at the ends of the slots for engaging saw teeth; brackets adjustably held at the ends of the block, said brackets having bars connecting them; and a carriage slidably mounted on one of the bars, said carriage having outstanding arms with sleeves in their outer ends for holding a file, and projections adjacent their inner ends for engaging the second bar to hold the carriage in such a position that the file will engage the saw teeth.

2. A. file gauge of the class described having a block with transverse slots in it through which a saw may pass; bars at the ends ofthe slots for engaging the saw teeth, said bars having beveled edges and being pivotally mounted on adjusting screws; brackets having parallel bars upon which the file carriage is slidably mounted, said brackets having slotted openings in their ends by which they may be held to the ends of the block by thumbscrews which are held in slotted openings in the ends of the block;

and a file carriage having arms mounted upon a sleeve that is slidably mounted on one of the parallel bars, and said arms having bushings in their outer ends in which a file may be held.

WILLIAM HILTON.

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