US327651A - Joseph d - Google Patents

Description

(No ModeL BRADSHAW.

SAW TABLE GAGE.

Patented Oct. 6, 1885.

Unitarian drains arena reins.

JOSEPH D. BRADSHAXV, OF PROVIDENCE, RHODE ISLAND.

SAW-TABLE GAG E.

forming part of Letters Patent No. 327,651, dated October 6, 1885. Application filed June 25, 1885. Serial No. 169,693. (No model.)

To aZZ whom it may concern:

Be it known that I, Josnrn D, BRADSHAW, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Saw-Gages; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the ac companying drawings,and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to portable saw-gages of the class more particularly adapted to be adj ustably secured to the table of a woodworking circular-saw machine; and it consists in the novel form and construction of the gage, combined with a blade or tongue adj ustably secured thereto.

The object of my invention is to provide circular sawing machines, with means whereby the operator is enabled to readily cut off and split the stock or boards, the same being cut at any desired angle, the improvement, moreover, having fewer parts and being inexpensive as compared with other devices adapted for analogous uses, all as will be more fully hereinafter set forth and claimed.

For the purpose of illustrating my improved saw-gage, I have prepared the accompanying sheet of drawings, in which Figure l represents a top view of a circular sawing machine provided with the gage as adjusted for cutting off boards, 85c. Fig. 2 is a similar View of the saw, but showing the device transferred to the opposite side of the table and thus used as a fence, the same being employed in splitting stock to a uniform width. Fig. 3 is also a plan view showing the gage adjusted to cutoff boards at an angle, in this case being forty-five degrees. Fig. 4. is a longitudinal sectional view through an m of Fig. 3 enlarged showing the manner of clamping the tongue to the frame. Fig. 5 is a plan view of the gage, showing the same adjusted to its extreme lateral position. Fig. 6 is an inverted View of the gage. Fig. 7 is an enlarged transverse sectional view on line 1' o of Fig. 2, showing the clamping device for the gage when used as a fence. Fig. 8 is a reduced plan View showing the gage coma, again referring to the drawings,designates the bed or table of an ordinary circular saw ing machine, as provided with the pulley 1), saw 8, and its arboxgas common, said table being recessed to receive the strips h h, which are secured therein parallel with and in front of the saw to serve as a guide for the gage, all as fully shown.

6 designates anotherguide,which also is let into and secured to the table, said guide being substantially over and parallel with the saw arbor.

(1 indicates a T-shaped groove formed in the bottom of the recessed portion h of the guide, said groove being adapted to receive the clamping-bolt (F of the gage at times when the latter is used in splitting stock, as

fully shownin Figs. 1, 2, and 7.

A designates the gage as a whole, consisting of the head or frame B, preferably made of metal, and the tongue 0, adj ustably secured thereto by means of the clamping-dogs 7; k. The frame B is substantially triangular in outline, the bottom surface thereof being practically smooth and flat. Around the edge of the frame is formed the upturned flange or sides, two of which, it, intersect each other at an angle of ninety degrecs,thereby forming the point or apex i, the two said angular sides i 2", if prolonged,would intersect the op posite side, 1" at an angle of forty-five degrees. In practice, however, I prefer to cut off the extreme endslof said sides, thus forming the short right-angle sides 2', as shown. A large circular hole or opening, I), is formed in the base of the frame 13, said opening having the flange Z) circumscribingthe same. Said sides and flanges are made true and smooth bysuitable means.

0 designates a metallic tongue or blade having the slotted opening 0* therein, said blade being adapted to fit into and slide freely along the grooves h and h 7c and 7c indicate clamping-dogs, which serve to retain the gage in any desired position. The dog 70 is swiveled by means of a bolt or pin, to the end of the tongue, while a similar screw or headed pin,0, adapted to slide in the opening ofiis used to connect with the dog is, each dog having a groove formed in its under side adapted to receive the circular flange 7) before described, an overhanging end or boss provided with the thumb-screw a at the same time serving to firmly clamp the parts together,as fully represented in Fig. 4.

(1 indicates a hole formed in the tongue adjacent to the swivel 0, for the purpose of receiving the T-headed bolt 61*, which is used in connection with the grooved guide 6 before described.

15, Figs. 8 and 9, designates a gagebar having a longitudinal groove t, formed therein to receive the T-headed bolts to, the latter 0 also passing through holes 10, formed in the side i of the frame. A dog, 1", is adjustably securedto said bar by means of the screw u, as shown. This latter device is particularly adapted to be used with the saw-gage for the purpose of insuring uniformity in length of the sawed stock, when desired.

The operation may be described substan tially as follows: In sawing off boards 8 &c.,

Fig. 1, the gage A is first placed upon the ta- ,0 ble a, the tongue Oresting in the groove h of the table, as shown. The dogs k k are now secured in position, by means of which the said frame and tongue are retained in relation to each other, after which the gage is forced 5 along in the arrow direction, thus bringing the work in front of and in contact with the rapidly-revolving saw. In order, however, to cut off the stock at an anglesay forty-five degrees-the dogs are first loosened, after which c the frame B is swung correspondingly around,

the side i being then at an angle of forty-five degrees with the tongue 0, when finally the dogs 7c 70 are secured in position. The same result is obtained by simply reversing the po- 5 sition of the gage upon the tablethat is to say, by placing the straight edge 2" at the rear, thus bringing'the angular sidesz' i in front, as shown in Fig. 3.

It is obvious that the stock may be cut at any desired angle by simply changing the relative positions of the frame B and its tongue.

Another advantage to be derived by means of my improved gage is that the end or edge of the frame is adapted to be brought into 5 close proximity with the saw, no matter at what angle the gage may be set. This I accom' plish by moving the frame laterally, (the tongue remaining in the groove h or hi) the bolt 0 at the same time sliding along the slotted openingo, the dogs 75k securing the parts in position, as before. Fig. 5 represents one position obtainable by the means just described.

hen the gage A is used as a fence in splitting stock 8, the tongue rests in the groove h,

the frame B being adj ustably secured thereto, as before described. In addition thereto,

however, the T-headed bolt d is employed, the same being clamped in position by means of the thumb-nut d, as shown in Figs. 2 and 7.

Should it be required to cut up stock into uniform lengths, the bar 15 is preferably employed, the same being adj ustably secured to the gage-frame B by means of the retainingbolts w, the bar at the same time being provided with the adjustably secured dog or stop 1", all as shown in Figs. 8 and 9, and to which reference has before been made.

It is evident that the outline of the gageframe may be square or rectangular and provided with the circular and flanged opening 1) without departing from thespirit of the invention. I contemplate adapting the improved gage whereby it can be used in connection with grinding, sandpapering, and other analogous machines of that class.

I am aware that saw-gages for cutting bevels, 850., have been made and used long prior to my invention. Therefore I do not broadly claim such devices; but

\Vhat I do claim, and desire to secure by Letters Patent of the United States, is-

1. As an improved article of manufacture, the gage for circular saws hereinbefore described, consisting of the flangedframe B, substantially triangular in outline, provided with a flanged circular opening in its base, a slotted tongue adj ustably secured to the under side of the frame, and dogs or clamps for retaining the tongue in position, substantially as shown, and for the purpose set forth.

2. The gage for circular saws herein described, consisting of the frame B, substantialy triangular in outline, provided with the flanged circular opening I) in its base, the slotted tongue 0, adj ustably secured to the under side of said frame, and dogs or clamps 7c for retaining the tongue in position, substantially as shown, and for the purpose hereinbefore set forth.

3. The combination, with a circular sawing or other analogous machine having a table provided with one or more guides, h e, or their equivalent, of the gage A, herein described, consisting of the flanged triangularshaped frame B, having a circular opening, b, in its base, and the tongue 0, adjustably secured'to said frame by means of dogs or clamps 70' 7c, said tongue being adapted to slide freely in the guidesh e, as and for the purpose set forth.

4. The combination, with the saw gage herein described, consisting of the flanged triangular-shaped frame B, having the circular opening b formed in its base, and the tongue 0, adj ustably secured thereto, of the T headed bolt d, said bolt passing through an opening, (1, formed in the tongue 0 and adapted-to engage the groove d of the recess h, formed in the table-guide c, substantially as shown, and for the purpose set forth.

5. The saw gage hereinbefore described and shown, consisting of the flanged triangular-shaped frame B, provided with the circular opening b in its base, the slotted tongue In testimony whereof I have affixed my sig- G, adjnstably secured to the under side of the frame by means of the screw-connected dogs is k, and the slotted gage-bar t,adjustab1y 5 secured by means of bolts w to the vertical Witnesses:

flange forming the longest side of the frame, WM. R. DUTEMPLE,

as set forth. 1 GEO. H. REMINGTON.

nature in presence of two witnesses. V

JOSEPH D. BRADSHAWV.

Images