US73428A - Improvement in mortising-machines - Google Patents

Description

`'.'lO ALL WHOM IT MAY CONOERN:

V@einen gratta f @anni @ffice 'coRNELU'S BAGGERMAN AND Join-N GREEN, or ST. LOUIS,A MISSOURI. Y Letters Patent No. 73,428, dated January 21, 1868. i

IMPROVEMENT IN MORTISI-NG-MACHINES.

Be it known that we, CORNELUS BAGGERMAN and JoHN Gitana, of St. Louis, in the county of St. Louis, and State of Missouri, have invented a new and useful Improvement in Flanking-Machines for Mortising Sash- Rails; and we do hereby declare that the following is a full and clear description thereof, reference being had to the'aecompanying drawings, and to the letters of reference marked thereon.

Thisinvention relates to an improved arrangement of the chisels, whereby they are enabled to cut from both sides of the piece to be mortised at one operation, the chisels being operated by cam-"gearing, and the piece to be mortised held in position on an adjustable table by means of slidingholders, also operated by cam-gearing. y,

'.lo enable those skilled in the art to make and use our improved machine, .we will .proceed-to describe its con:

struction and operation.

Figure l of the drawings is a plan of the machine.

. Figure 2 is a side elevation of it, and' Figure 3 is a longitudinal sectional elevation;

A is the framework of the machine, on one end of which` is placed the driving-shaft A, and on the .other end the sliding arbor-frame A2, the latter framev having an adjustable connection with the former by 'means of the set-screws a, in such a manner that it may be Set so as to accommodate diierentwidths of Stull., The table B, on which the piece B is placed to be mortised, is' adjustable as to height, by means of the set-screws b, so as to accommodate the diierent thicknesses required, the said screws working in slots in the table B for that purpose. In order to allow a longitudinal adjustment of the table, a series of holes, b', is made in the side ofthe frame A, to which the said screws 4Z7 may be changed whenrequired.' There are two chisel-arbore, C and C', the former of which has its bearings in the frame A2, and the other in the frame A. Both of the chisel-` 4arbors are' actuated in harmony with each other by the cam-wheel D, the canrrods d operating the arbor- C', and connecting-rods dl transmitting motion from the rods clito the arbor- C. 'AS vit is necessary to adjust the frame A2 and its arborC, at different. distances, forward and backward, to accommodate diierent thicknesses of stu for the piece B', the attachment ofthe arbor C to the rods dl must also be adjustable, and this is most readily done by means of the nuts d2 d3, which may be used tov move the arbor-arms al* backward or forward,

as may be required. The cam-wheel D has a. double-flanged rim, which passes between the sheaves d!y d",

attached to the cam-rods d, and thereby forces the said rods forward or backward by means ot' the internal cam 017, or the external cam cl3, the motion given by the cam (Z7 being just suilicient to draw the chisel c ofthe arbor Cinto the iece B a short distance, and then the cam, d3; is of Such size, and so located on the rim ofD esto force the chisel c',l of the arborC, the remaininv distance desired into the o osite side of the f a PP `pieeev, and thus a completely-formed mortise, cut from both sidesof the piece, is finished at each xrevolution i of the machine. The formation, size; and location oi' the cams dirla, upon the rim D, are such that a short,

quick, reciprocating motion is given to the chisels c c', and then the said chisels are allowed to remain stationary a suiicient length of time for thej removal of the piece B', andthe substitution, instead thereof, of a new piece, the stationary time being occupied by the revolution of the circular part of the rim dg. There are two slidingholders E, operated by the cams E', located upon the Shaft A, in much the same'manner as are the camrods The constructionof the cams E and the rods E is such that ends, e e, of said rods will be forced hard against the piece B,' just an instant before either chisel strikes it, and held the said piece up hard against its table until after the last chisel shall have left it. i

Having described our invention, what we claim, is-

The coimbinationbf the sliding chisel-arbors C C', the sliding holders E, the cam-,rods ol, the connectingrods d1, the camswheel D, and the cams E, constructed and operating substantiallyas described.

In testimony of which invention', we hereunto set our hands, in the presence of coRNnLUS BAGGERMAN,

JOHN GREEN.

Witnesses: I

M, RANDOLPH, CHAs. H. Bonn.

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