US169336A - Improvement in tenoning-machines - Google Patents

Description

2 Sheets-Sheet 1.

H. BRAND'.

TENONING-MACHINE.

Patented Nov. 2,

No.mmse. Y

Wineases.'

NJ'ETERS, PHOTCLLITHOGRAFNE. WASHVNGYON, D. C.

=2 Sheets-Sheet. f H. BRAND.

Mmmm-MACHINE. Nc.169,336. Patented Nov. 2,1875.'

Maf/M 'the labor of operating the carriage.

'dNrrED l.'.Srnfriiis 'PATENT HENRY. BRAND, OF ST. PAUL, MINNESOTA.

IMPRCVEMENT IN TENONING-MACHINES. t

Specification forming part of Letters Patent No. l @$9,336. dated November 2, 1875 application led March 24, 1875.

To all whom @t may concern:

Be it known that I, HENRY BRAND, of St. Paul,lcounty of Ramsey, State of Minnesota.

have invented a new and useful Improvement j in rIenoning-ll/Iachine, of which the following is a full, clear, and exact description, reference being had to the accompanying. drawing, making part of this specication, in Which- Figure lis a plan or top view of my improved machine. Fig. 2 is an end elevation of the same, and Figs. 3, 4, 5, 6, 7, 8, 9, 10, and ll represent details or parts of the machine hereinafter described. l

Similar letters of reference denotecorrespending parts of the machine in all of the figures Where used.

The invention consists in supporting the table or carriage, or one end thereof, upon pivoted vibrating segments or parallel links, the swinging ends of Which are formed i'n arcs of circles, of which the pivots upon which the arms swing are the centers, in such manner that the carriage resting on said vibrating segments will move in right lines, thereby obviatng to a great extent the friction due to the movement of the earriage'upon the tixed ways ordinarily used, and greatly'diminishing The invention further consists in a novel construction of the cutter-head itself, as hereinafter described. v Y v In the accompanying drawings, A Al represent an upright rectangular frame, of any suitable construction, and B is the reciprocating carriage mounted thereon, also made in any usual or preferred manner. The carriage B is supported at its rear end, or that end opposite to the cutter-head, (or it may be at both ends, if preferred,) upon parallel links G C, pivoted at their lower ends at c to the uprights or posts A. The upper end of these links, expanded in width at C', are formed each in the arc of a circle of Which'its pivot a is the center, and move in grooved guiding plates or ways b, secured to the lower surface of the table B, and which serve to give direction and steadiness to the movement of the table, which moves on 'the face of said segments as on the periphery of large wheels having lixed pivotal centers. The adjacent ends of these segments are connected with each other by a pivoted link, D, which is also pivoted midway of its length to a pendent bracket, d, attached to the table, said link serving to maintain the vibrating segments in proper Working relation to each other and to the table, and also to limit their throw. These pivoted segments may be applied at both ends of the carriage or table, but for giving precision of movement I prefer to employ, at thel 'cutter-head end, aninverted V-shape or knifeedged guiding-rail, E, matching correspondingly-grooved rails or guides c, secured to the lower face of the table, this form diminishing the friction, while at the same time it prevents deflection in the line of movement of the ta ble. If preferred, small, grooved frictionrollers may be applied to the table in lieu of the fixed guides c. An angle-iron, el, engaging with' a lip or shoulder at e2,I on the guiderail E, holds the vcarriage firmly down on said rail. In suitable guidingbrackets f, attached to the frame, is mounted a vertical carriage, F, consisting either of an upright angular plate, as shown, or of a frame of any preferred construction, upon the upper end of which, in bearings g, is mounted the rlongitudinal shaft G, which carries the head, and to which motion is communicated in any suitable way. The rear face of the plate or frame F has a perforated bracket or ear, h, formed upon or Y attached to it, in which a screw-thread is cut matching a screw formed on a vertical shaft, H, mounted and rotating in bearings in the frame-bars A', and by the rotation of which a vertical movement is imparted to the .frame F for adjusting the shaft G and cutter-head as desired. The cutter-head I shown in Figs. 1 and 5, and in detail and sectional views, Figs. 6, 7, 8. 9,10, and 11, is constructed as follows: Upon ille' shaft G is keyed a collar-plate, J, and outside of said collar the shaft is feathered at g', (see Fig. 8,) and has a sleeve, K, placed upon it, said sleeve being grooved to match, and rotating with said shaft. The periphery of this sleeve has a right and left handed screw formed upon it, adapting. it to 'Y receive internally-threaded rings L L', the-V relative rotation of which to each other is prevented by interlocking pins or `spurs l, and these, in connection with the feather g and pins j on the collar J, entering holes in the sleeve K,

jg 1 i if `"uname electuall y prevent any rotary movement of the parts ofV `thefhead tol each other "when in `place ontheshaft G. These rin gsLL' arepassed n wuponthe sleeve Kfrom its opposite ends, and

are drawn together or into the desired' proximity by the action of the right and left hand screws when the slee'veisw` rotated, the pins L preventing ythe relative rotation .of the rings. The rings L L' have each a rabbet or shoulder formed at their outer falces atmto receive the annular saws M, which are clamped in place between the rings L L' and the fixed and removable collars J J by a clampingnut,N, on

'the end of the shaft G. The rings L L' have perforated lugs or ears Z' formed upon them, in which the cutter arms or Shanks P arepivotedpthesejarms reachingoutjto or near to the periphery of the saws M. These cutter-arms are expanded in Width attheir outer ends, so thatthose upouone ring shall overlap' those .of` the other ring, as shown in Figs.` l and 5,

andi are'bent into the form,\substantially as shown iu Figs. 9 and 10, for bringing the outercutting-face into or nearly; into linecoincident witlrthe circular path described thereby. i Thiscutting-edge may be formed directly upon the ends of the pivoted arms P, but `I i prefer to make them separately, as shown in Figs.-5 and'lO at p', in Whichcase aisoclfet or e depression is `formed in the outer endsof the arms for their reception, and the detachable cuttersor cutter-lips p' are secured therein by means of boltsl or set-screws, as shown. t

Under this latter construction y the cuttinglips p' can'` be readily removed for sharpening, and for them substitution of new onesA when Worn out or broken. They can be slotted for making themadjustable, if desired,but it is preferred toeifect` thisjadjustment by means of screw-rods q, pivote-.d` to lugs `or ears r formed on the rear face of the armsP, and

passing through lugs or ears sionthe rings L y `L', as shown in Fig. `9. The rods q, and with them the' cutters p', are set in or out, as de sired, by meansof jam-nuts t on the rods q, on opposite` sides of the lugs s; The saws M (see Fig. lllmay be of any usualor preferred construction, and by simply removing the cutter-hea sa\v,`.the car fmachine.

gage` `aar, U, is pivoted to the carriage-frame bar B', adjacent to the cutter-head, and the outer swingingiendoff'said bar is held ,by a clamp, V, or other equivalent device for holding said bar, at any desired angle to the path of the carriage tbrdetermining the angle of 3 i The peripheriesof the the tchou-shoulder.` segments C may be knife-edged or Vshaped, matchingcorrespondinggrooves or guides on; the lower face of the carriage, and guide or steadying straps or bars may be used for pre-` 3 i venting lateral deflection of the segments,

thereby insuring precision in the movements ot' said carriage. i i

Having now described my invention, `what` i y I claim, and desire t0 securel by Letters `Batent is- 1. The pivoted vibrating segment C',c on` structed and applied to the reciprocating carria-ge B, substantially as described, whereby` i said carriage is supported by and adapted :to be movedin right lines upon saidsegments,` for the purpose and substantially as set forth.

i 2. rIhe cutter-head sleeve K, provided `with the right and left handscrews, as described, in combination with the rings L L', to which the cutters are attached, substantially as de; scribed. i y

The cutter-arms P, hngedlto the rings L i L', in `combination with the adjusting-rods q,-

arranged and operating substantially asdescribed.

`4. The cutter-heads, constructed substan-I tially as described-@that is to say, havingxthe sawsM M and the intermediate sleeve` and adjustable cutters, arranged and operating substantially as described.

In testimony whereof `I have hereunto set my hand., A

HENRY BRAND.

Witnesses:

J. H. ELWARD,

E. S. CHITTENDEN.

@-fndusing a single" circular` y, ,n cbnstructeduas described, @1j t/'1bn sawing lumber' instead `ot as l i Upon the carriageB a

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