US374730A - Laying-out attachment for mortising-machines - Google Patents

Description

(No Model.) 3 SheetsSheet 1 A H. M. BULLIS.

LAYING OUT ATTACHMENT FOR MORTISING MACHINES.

IINVENTOR:

Patented Dec. 13, 1887.

ATTORNEYS.

N, PETERS. Phoivlilhographer, Wahingtnn. o. c.

(No Model.) 'asneets-snet 2. H. M. BULLIS.

LAYING OUT ATTACHMENT FOR MORTISING MACHINES. No. 374,730. Patented Dec. 13,1887.

YYITNESH INVENTORY:

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' ATTORNEYS;

N. PETERS. Halo-Lithograph". Washington, D.C

'(N'o Modem H. M. B LLIs.

LAYING OUT ATTACHMENT FOR MO RTISING MACHINES. I Np. 374,730. Patented 1m. 13, 1887.

1 nun| I INVBNTOR i 7W1. 20m,

' v BY MAM w M ATTORNEYS;

I WITNESSES:

3 Sheets-Sheet 3.

UNITED STATES PATE T OFFIC HENRY M. BULLIS, OF TRAVERSE CITY, MICHIGAN.

LAYING-OUT ATTACHMENT FOR MORTISING-MACHINES.

SPECIFICATION forming part of Letters Patent N 0. 374,730, dated December 13, 1887.

Application filed June 24, 1887. Serial No. 242,384. (No model.)

To a'll whom it may concern:

Be it known that I, HENRY M. BULLIS, of Traverse City, in the county of Grand Traverse and State of Michigan, have invented a new and Improved Laying-Out Attachment for Mortising-liiachines, of which the following is a full, clear, and exact description.

' The object of my invention is to provide a new and improved attachment for mortisingmachines by which the mortise can be accurately formed at each end of a piece of wood.

The invention consists of certain parts and details and combinations of the same, as will be fully described hereinafter,and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a side elevation of my improvement shown in connection with the parts of a mortising-machine. Fig. 2 is a plan view of thesame, parts of the mortising-machine being in section. Fig; 3 is a longitudinal sectional elevation looking from the rear. Fig. 4. is a plan view of the stationary bed. Fig. 5 is a side elevation of the rule for measuring the stroke. Fig. 6 is an enlarged cross-sectional elevation of my improvement on theline x w of Fig. 2. Fig. 7 is an enlarged end elevation of a sliding block for supporting a rest. Fig. 8 is a side elevation of the same. Fig. 9 is a side elevation of one end of the rest for the sliding block illustrated in Figs. 7 and 8; and Figs. 10 and 11 are detail plan views, partly in section and on a larger scale.

My improvement is held on the top of the table A of a mortising-machine of any approved construction. The bed B of my improvement is fastened by bolts or other means to said table A, and is provided near its ends and in the middle with the rollers O, which are mounted in suitable bearings in the sides of the bed B and extend with their tops slightly beyond the upper edge of the bed B, and support the sliding carriage D on the guides E, each of which is provided in its middle with a longitudinally-extending dovetail, E, fitting into a corresponding groove formed in the transverse partitions B and the end walls, B, of the bed B.

the inner ends of the dovetailed strips L, sliding in the dovetail groove I-I, extending the length of the carriage D at the rear, as shown in Figs. 2 and 6. The inner end of the dovetailed strip L, which is connected to the block G, is reduced-that is, it does not project be-' yond the groove in the rear of the'oarriage.

. The blocks G and Gare connected with each other by a screw-rod, I, having right and left hand threads and a collar, 1, in its middle, which collar passes between the flanges of the lug H, secured to the carriage D,so.that when the screw-rod I is turned by a key or other means the blocks G and G" slide-toward or from the lug H, which prevents the collar 1 from moving endwise.

On the block G is secured one end of a rule, J (see Fig. 5,) extending to and beyond the other block, G, and serving to indicate the length of the stroke of the carriage D-that is, the length of the mortise to be made. When the blocks G and G are adjusted to the stroke requiredthat is, to the length of the mortise'tobe madethen the blocksG and G are secured to the carriage D by the screws H", passing trans versely through the carriage D and pressing against the inner faces of said blocks G and G, as shown in Fig. 2. On the rear of the bed B is secured a lug, K, which projects upward between the blocks Gand G, so that on the forward and backward motion of the carriage D said blocks G and G strike alternately against the lug K. thus limiting the forward and backward stroke of the carriage D, which stroke is equal to the length of the mortise to be made, and the stroke is regulated by adjusting the screw-rod I, as above described.

In the groove H in the rear of the carriage D are adj ustably held the dovetailed graduated strips L, each extending from the end of the carriage inward and fastened to the blocks G G, as hereinbefore described, and on each strip L is-held to slide a block, N, on which is fastened the rest O,held on the top of the carriage' D. Each sliding block N is secured, after it is adjusted on its respective graduated strip L, by a bolt, N, by screwing the bolt N with its lower pointed end against the upper inclined edge of the dovetailed strip L, as indicated in dotted lines in Fig. 6.

On each side of the handle F on the front face of the carriage D is secured a dovetailed graduated strip, P, extending longitudinally from said handle F toward the end and serving to carry an L-shaped block, Q, held adjustably on said strip P by a set-screw, Q. The upper arm of the block Q rests on the top of the carriage D and carries a vertical pin, R, on which is held to swing, whenever desired, a. wooden beam,S. (Clearly shown in Figs. 9,10, and 11 and in dotted lines in Fig. 2.) Said wooden beamS is adapted to rest with its free end on the same .end of the stile to be mortised, and is swung forward when the opposite beam S is used. K

The operation is as follows: The bed B is secured to the table A in such a manner that its rear rests closely on vertical guide A, extending upward from the rear of the table A. The stile or other piece of wood to be mortised is placed on top of the carriage D, abutting with its outer end against the rest 0, and its rear being placed against the face of the guide A. The inner end of the stile or beam to be mortised is directly under the mortising tool T of the mortising-machine, and the rest 0 is set so that when the attachment is in the position shown in Fig. I then the mortisingtool T is at the extreme outer end of the mortise to-be formed in the stile. The block G in this position of the attachment restsagainst the lug K of the stationary bed B. The blocks G and G are set according to the length of the mortise to be made by the screw-rod I, and the length of the mortise is indicated by the rule J. The mortising-machine is now set in motion, so that the mortising-tool T operates on the stile or wooden beam in the usual manner. The operator at the same time takes hold of the handle F and moves the carriage D in the direction of the arrow 0. until the block G strikes against thelug K, and the tool T is now at the inner end of the mortise to be formed. The carriage D is then moved in the inverse direction of the arrow at until the other block, G, strikes against the lug K, and the above-described operation is then again repeated, whereby the tool T forms the mortise in the stile or wooden beam. When one end of the stile is mortised, then the operator slides the stile toward the other end of the carriage D until the same end abuts against the rest S on the same side of the attachment. The other end of the stile is now mortised in the manner above described. Each operation makes a mortise half through the timber. Then the work is turned end over and the stops on the opposite side of the attachment are used.

Having thus fully described my invention, I claim as new and desire to secure by-Letters Patent 1. In alaying-out attachment for mortisingmachines, the combination, with a stationary bed provided with an upwardly-projecting lug, of a carriage traveling on the said bed and provided with a longitudinal groove, graduated strips in said groove, and blocks secured to the strips and adjustably connected together, substantially as described.

2. In a layingout attachment for mortisingmachines, the combination, with a stationary .bed provided with an upwardly-projecting lug, of a carriage sliding on the bed, graduated strips held to the carriage, blocks secured to the said strips and adjustably connected together, and rests adj ustably secured to the said strips, substantially as described.

3. In a laying-out attachment for mortisingmachines, the combination,with a bed secured to the table of the mortisingmachine, rollers held on said bed, and a lug secured to the rear of said bed, of a carriage traveling on said rollers, gage-strips held adjustable on said carriage, and blocks held on said gage'strips and engaging alternately said lug on the bed, substantially as shown and described.

4. In a laying-out attachment for mortisingmachines, the combination, with a bed secured to the table of the mortising-machine, rollers held on said bed, and a lug secured to the rear of said bed, of a carriage traveling on said rollers, graduated dovetailed gage-strips L, held adj ustably on rear of said carriage, blocks held on said gage-strip and engaging alternately said lug on the bed, and rests mounted adjustably on said carriage, substantially as shown and described.

5. In a laying-out attachment for mortisingmachines, the combination, with a sliding carriage, of blocks adapted to slide on said carriage, a screw-rod connecting said blocks to each other, and a rule secured by' one end to one of said blocks, its other end extending to and beyond said other block to indicate the stroke of the carriage, substantially as shown and described.

6. In a laying-out attachment for mortisingmachines, the combination, with a carriage provided on the rear, near each end, with a graduated dovetailed strip, of an L-shaped block held adj ustably on said dovetailed strip and a rest mounted on said block, substantially as shown and described.

7. In a laying-out attachment for mortisingmachines, the fixed bed B, secured to the table of the mortising-machine, the rollers G, mounted on said bed B, and the lug K, held on the rear of said bed B, in combination with the carriage D, traveling on said rollers C and provided with the dovetail E, engaging a corresponding groove in the end walls, B, and the partitions B of said bed, the handle F, attached to the front of said carriage D, for moving said carriage forward and backward,

374,730 r it and .the adjustable blocks G and G, secured to the carriage D and striking alternately against said lug K, substantially as shown and described. y

8. In a laying-out attachment for mortisingmachines, the bed B, the rollers O, mounted in said bed, and the lug K, held on the rear of said bed, in combination with the carriage D, the blocks G and G, held adjustably on said carriage D, and the screw-rod I, for adjusting said blocks G and G, substantially as shown and described".

9. In a laying-out attachment for mortisingmachines, the bed B, the rollers O, mounted in said bed, and the lug K, held on the rear of said bed, in combination with the carriage D, the blocks G and G, held adjustably on said carriage D, the screw-rod I, for adjusting said blocks G and G, and the rule J, se-

cured by one end to said block G and extend- 20' ing over to and beyond the other block,'G, and adapted to indicate the stroke of the carriageD, substantially as shown and described.

10. In a laying-out attachment for mortising-machines, the carriage D, the graduated dovetailed strips P, and the adjustable rests 0, held on said carriage D, in combination with the blocks Q, held adjustably'in'said graduated strips P, and the beam S, pivotally connected with said block Q, substantially as 0 shown and described.

HENRY Bonus.

Witnesses:

Tnos. G. SHILsoN, EPHRAIM E. TIFFANY.

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