US1850987A - Saw set - Google Patents

Description

March 22, 1932. R W N 1,850,987

1 s'Aw SET, I

Opiginal Filed May 21, 1929 INVENTORL fiobe rt Weseman Patented Mar. 22, 1932 uni-ran stares sAw stir" Application filed May 21, 1929, Serial No. 364;262. Rienewed.=l ebr uary-l0, 1 932.

My invention relates to saw-sets and certain objects of the invention are to provide a saw-set that is adapted for manual operation by foot and hand, which embodies means for setting saw teeth at predetermined angles together with adjustable means whereby the angles may be changed as desired, and which embodies adjustable means for regulating the length of the plunger stroke and adjustable means for setting the base block at different heights.

l/Vith the above and other objects in view which will appear as the description proceeds, the invention consists of the novel construction adaptation, combination and arrangement hereinafter described and claimed. These objects are accomplished by devices illustrated in the accompanying drawings; wherein;

Fig. 1 is a view in perspective of the machine as a whole;

Fig. 2 is a top plan view of the complete machine;

Fig. 3 is an enlarged view in perspective of the main operating parts of the'machine;

Fig. 4 is a view in central vertical section of the same.

Referring to the drawings throughoutwhich like reference numerals designate like parts, the numeral 5 indicates the rear legs and 6 indicates the forward legs which are convergently disposed and the four legs are held in spaced relation and triangular disposition by three upper frame members 7 and 35 in rectangular disposition at their lower portions by four frame members 8. A seat 9 is mounted on said upper frames where they convergently join the forward legs for convenience of the operator.

The rear legs 5 slant inwardly to the upper frames 7 and their portions above said frames, as designated by the numeral 10, are vertically disposed as clearly shown in Fig. 1 of the drawings. Said rear legs and their upper portions are provided with vertical slots 11. A base block 12, having depending side plates 18, has its corner portions slidably disposed within the angular leg portions 10 and thumb screws 14, slidably disposed in said vertical slots, are threaded into deide p ates thus; prov d ng: means whe es ysai bleek m y e edjuetebly raise e11 1o.wer ,d: .W l l e-uncle-rste d-v Ii11e bl ekl2 iss epped by-a e tway.p v ion: a 1.5: anditsile er step 1.6-.is.,pr0vid d: with a ntersunk..anvila'l7-othar unetel, Whiledts uppe step 18 a-braeket 1.9 S ured hereto in suppe t. eta spring c sti g 20. A wedge shaped pllll gerfilg disposedlvertieally above said anvil and; pass ng eu ra e ythrough a d pring ea ing; i provi ed w th-a a nul r: s eulder 22,. and an xp ne sioa spring: 23 housed withia he .casingheers gainst s id-s oul er and reta nssaid pluug er in \a normally raised position. 1 c j A connecting rodZ tifi eeuredztatheiups' p rapertien of the plung r 21. by means or 'aconnecting link; 2.5 p ssing through one end of the link or hole 26. Said connecting rod. may-be sh ted-teeny po ition loeked'i W place by a set screw .26. fo he purpeee of giving a longer or {shorter streke 1m th plung rin a do nward m vem n of aid; connec ing red. s: -wi11.-be u. derstond-v The. connecting rod has a relativelyloligiverticalportien whi h ext nd dewn ardlvmancl-s id elely r u h sni 1e e brao1;et27 tied; to the loek 1.2 and. th n e-to eounec'tien-withi a footilevger 218 ha sispivotallv onnected to fi ed ere e ar 29-. ltil -be obvious hat pressure applied to the,iootilever-wil ove he plunger downwa d yto engagement-with.- the anvilil a d-when same is. released th spring 23 will, raise said plung r e its @103 11 .a1.=,positionfor; gi in ant to he s w. for prep ts tiagnf its teeth ompris s o e stationary member 3 and n uppe adjust abl ember 3L: T e owermembersis secu ed. and built-in lo er block e epu'l T e upper m mbe 131 inse t d nteaherh ental; slot-1 f, member 2 Th member 31. s slidablein aherizeatatphm an isheld in rigid alinement by tightening the thumb er n33 A'thr ade ibelt ifie isiseeurely ta tened topthe memberfil; andgprojects vertically thru slot 34; supporting thumb screw 83. The upper slidable member 31 is provided with a horizontal slot 37. A screw rod which is threadedly disposed thru the member Wt (ill is provided with an annular shoulder 36, which coacts with slot 37 By loosening the thumb screw 33 the member 31 is free to be adjusted thru the operation of the screw rod 35 by turning the knob 38.

In the operating of my device, a saw such as shown at 39, is placed in the position shown in Fig. 4 with its teeth directly under the plunger 21 and one of its sides resting on the slidable upper member 31 in a horizontal disposition. By pressing on the foot lever 28 and moving the saw along by hand plunger may be made to turn every other tooth outward and by turning the saw over the remaining teeth may be turned outwardly in the opposite direction. If a coarser set of the saw teeth is desired for the purpose of sawing a wider kerf the upper member 31 is moved outwardly by turning the screw knob 38 to the right thus giving a greater slant to the saw and a finer set may be made by turning said knob in the opposite direction as will be understood.

Referring to Fig. 3 of the drawings, I usually provide a scale such as shown at 10 on thestationary member 30 and an index mark 41 on the slidable member 31. Thus, invmoving said slidable member the pitch or setting of the saw teeth may be predetermined by shifting said slidable member until its index mark registers with any number or mark on the scale to give the desired setting.

Having thus described my invention, it being understood that minor changes in its construction may be resorted to without departing from its scope and spirit, what I claim anddesire to secure by Letters Patent of the United States is A sawset comprising a frame, upwardly projecting spaced apart angular members for the frame, a base block, depending side plates for said block, the corners of said block slidably disposed within the angular frame members, clamping means for said side plates whereby the base block may be adjusted to various heights, a foot lever, a plunger, a connecting rod between the lever and plunger, a connecting link between the plunger and connecting rod, adjusting means for said link, spring means for retaining the plunger in a normally raised position, an anvil slidably disposed in a groove in the base block and having a beveled inner portion, adjusting means whereby said anvil may be moved inwardly and outwardly with respect to the plunger, and screw clamping means for the anvil.

In testimony whereof I affix my signature.

ROBERT WESEMAN.

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