US78060A - William t - Google Patents

Description

W. F- COBB.

Tenoning Machine Patented May 19, 1868.

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' -Lttars PatentNo. 78,060, dated M11319, 1 868,

mofl ALL WHOM '11 MAY CONCERN:

Be it known that :1, WILLIAM FJCO'BB, of Whitestown, ,inthe countyof' Boone, inlthe Stoteof Indiana, have invented a new and useful Improvement in Tanning-Machines? and I do hereby declare that the follow-5 ing is a full and exact description thereof, refei-en cebeing had to the accompanying drawings, and to the letters at rference marked thereon-Q Figure 1 represents a front elei ntion of-my new machine. Figure 2 represents o. side elevation of the some; and I Figure 3 is a view of the adjnstable chisel detached; t v p An iron frame, B, is fastened to the tahle A, upon which tho lumber rests. The cruise, whlchnre-fastcried to frome B, are made fast'by sctews to'the block D, andg s'upp ort the operating-mechanism aboye the table, A. The central block, D, is perforated with four holes, through which the fixed g'uidesrods, e a z r e inserted. The slot m, in the centre of the block D, is made for the chisel-rod, b, to work-in. thesidcs of the central block, D, there 'are two plates, 1 1, on which. lips, 2, ore formed, to serve as supports jnnd guides for thefour rack-bars, 3,which connect th'e;chisel-bar holders or-'gi1 ides," 1. The racks, 3,'-ser"ve to adjust the chisels, with their holdjersand guides,towards or from each other, which maybe done by the crnnk,:5, with its'shaftnnd two pinions, 6,.which work one-both edges of block D, and mesh into the two pnirs'yf rack-bars','3, The supporting guide-rod's agapass through the chisel-bar holders or guides, 4, solos toperinit them to be hdjustd-bythe rock's,

- -3.' The--- fi*ont;ehisel-bar,.7, is slotted, to correspond'with the slot mgirr central hlock'D, and a shipping lzttch,

8,'is hinged-to the her 7' below the slot. Latch .8 may be thrown into connection with the chisel-rod 6, as himcete d in dotted lines, or it may he thrown outwardly, so es" to connect with pin 9, which projects fromtheside' of the chisel-liar guide,- 4. The curved notch, near the upper end of latch 8, will, when shipped'into the position indicated in dotted lines, embrace-theohisel-rod,'.b,' fi'ud therehyjthe chisel bnr, 7, will be forcedto 'ascend and descend with the rear chisel-her, thro'i'zgh which the chisel rod 6 also ,pass es, ,and, bj noving'hitch 8 outwardly', so as to connect it with the .pin 9, the chisel-rod, 6, will descend in theslot m, and the slot in jchisel-bsr,

7; leairi ng it et rest,"-while therear. chisel. can be operated alone. The pitxn'hn o connects ,treadle or curved coupling-iron 7:,aml' tliel-atter is'fastened byitsL-l-owe'r mow the chisel rod b, reari 'o'fi the central hlock, D. The guide-130d P is also connected with thelchisel rcd b, and extends through a centrolfvertical hole the, bent in the.uppor.por'tion of block D, and at its upper end iii-connects withretracting-spring S. It will now he understood that the chiseis will be rinsed by the action of spring-S,afteibeing caused to descend-by the action I of. trenrlle'i. By'means of the rocks 3, pinions-fi, andcrank.5 ,'-the chisel-holders or guides, 4, may he adjnsted, cnusing the space between the c'hi'sels to'he varied tolsnit different kim'l's of work. The screw-bolt T- will serve nskn gauge, b y'which to limit thc dis tance between the chisels Q Q front time to .ti1ne,-e.s;ma.yhenecessary, to

' form tenon sof diflerent thicknesses. ".lhc chiselsgre formed with an angular blnde,'i'or the purpose of formingthe shoulder-of tho tenon; at the same time, making the'sideof it; Thefchisel inny be made separate from thechi'sel hars, find fnstenedto thcniby nuts and bolts, win any snitzible manner. The chisel represented in fig. is formed-of the parts Q -Q which are, connected by a liinge-joint,'r. ,The set-screw t is embraced by the arm d, as represented in the drawings, and enters the not a, connectedwith'thechiseLbar 7', and a link f, is

connec'ted by pivots with .both the chisel Q and the nut c forinll at the bottom oi. the chisel-bar. By means of slots in the chisel-bar head, and screws in the chisel Q whichp'a'ssthzonghithe slots, the chisel, orthat part marked Q may be adjusted longitudinnlly, by means of set-screw t, which adjustment will cause the two parts to occupy the position indicated at y, in dotted lines, or they may beset at right angles; I Chiselssq formed and connected m ay be u'sed-te'form tenons with shoulders standing at an angle to the tenonle'ss then a' right single,

which in certain vkinds oi work is Ycry important. The bracket, Ren'd screw serve to clamp endhold' the 'lumber to he worked;

1 5 To cut a, tenon on the end of n'piece of lnmher, it will beheld by the set-screw U upon the: table A, with the end upon which aitenon is-to-he made'longitudinellyvplaced between the chisels Q Q when the movement of the treadle will canse the ,chisels to descend and cut away a portion of the wood, so" es .tolform a tenon.

What I Clilill1,flfld desire to secure oy Letter Pdteni, i s- 1. The, adjustable chisel-bar guides 4, 1ael-'L-b:afs 3, crarlk 5,: block D and its plates 1'1, iirfenged and eperhiiirigc pnjqintly, .as m idfor the purpose described v 2--v Tlle consir'u'etion of the chisel, consisting of the blade Q, 'ettached to the blade Q by the hingc-jolnt 1-, l and afijustable by mean sof screw t end link f, working in the arm e, whereby the chisel may cut a, tenon-nt a right angle or 'liss, ,ll cons trigetd uid 'drfang'efl-f te 'op'eiat'e fib stant'ially gs deeribed.

In ize'stimony whereof, I have hereunto set my hand, this 25th day of June, 1867. l v

- l WILLIAM ;CO BB.

and pinions 6, inombinatipn 'with centre] -Wic'ness es: PUGH, I l

WALHGREGORY-

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