US891755A - Mortising-machine. - Google Patents

Description

No. 891,755. I PATENTED JUNE; 2a, 1908. G. 0. WBSTLUND.

MORTIS ING MAGHINE; APPLICATION FILED APKM, 1907.

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G. O. WESTLUND. MORTISING MACHINE. APPLICATION FILED APR. 24 1907.

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G. 0. WESTLUND.

MORTISING MACHINE.

APPLICATION FILED APR.24, 1907.

No! 891,755. I PATENTED JUNE 23, 1908.

G. O. WESTLUND. MORTISING MACHINE.

APPLIUATION FILED APLM, 1907.

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No. 891,755; 1 PATENTED JUNE 23, 1908.

I G. 0. WESTLUND-v MORTISING MACHINE. APPLICATION :IILBD APB.24 1907.

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UNITED STATES GUSTAF O. WESTLUND, OF BUTTE, MONTANA.

MORTISIN G-MACHIN E Specification of Letters Patent.

Patented June 23, 1908.

Application filed April 24., 1907. Serial No. 370,105.

To all whom it may concern:

Be it known that I, GUSTAF O. WEsT- LUND, a citizen of the United States, residing at Butte, in the county of Silverbow and State of Montana, have invented new and useful Improvements in Mortising-Machines, of which the following is a specification.

This invention relates to mortising machines designed for use in preparing timbers to be employed particularly in the construction of mine frames, and comprises a movable work receiving carriage and a plurality of tool carriers equipped with mortising tools and sustained for vertical adjustment.

The invention has for its objects to provide a comparatively simple, inexpensive machine of this type, wherein the tool holding frames or carriers may be independently adjusted vertically for varying depths of the several mortises to be formed, one wherein the carriers are susceptible of independent adjustment toward and from one another for permitting formation of the mortises at determined spaced intervals, and one wherein the carriers may be accurately set for producing mortises of predetermined depths.

A further object of the invention is to provide an improved form of mortising head wherein the mortising blades may be readily adjusted for cutting at a greater or lesser depth, and one wherein the side plates may be adjusted for varying the width of the mortise. I

With these and other objects in view, the invention comprises the novel features of construction and combination 0 parts more fully hereinafter described. 1

n the accompanying drawings: Figurel a mortising machine embodying the invention. Fig. 2 is an end elevation of the same. Fig. 3 is a horizontal section taken on a line immediately above the work carriage. Fig. 4 is a side view of one of the mortising heads. Fig. 5 is a section through the same, taken on the line 55 Fig. 6 is a detail view, showing the manner of connecting one of the belt pulleys with the drive shaft. Fig. 7 is a transverse section of the work carriage showing the work clamp in elevation. Fig. 8 is a similar view showing one of the work rests. Fig. 9 is a perspective view of one of the rests. Figs. 10, 11 and 12 are detail views of the work clamp.

Referring to the drawings, 1 designates the main frame which may be of any form and material suitable for the urpose in view, but is by preference of the fbrm shown and constructed of vertical frame members or timbers 2 and horizontal frame members or timbers 3 connected with the timbers 2 by means of bolts or other fastening members 4 and braces 4, there being journaled in stationary bearings 5 on the frame a main drive shaft 6 equip ed with a plurality of belt pulleys 7 fixed y a spline 8 for rotation with the shaft and adapted for independent adjustment longitudinally of the latter and to be fixed in adjusted positions by means of set screws 9, for a purpose which will presently a pear, there being sustained on the front ofPthe frame a pair of vertically spaced, dove-tailed guide rails 10 extended in parallel relation longitudinally of the frame to which is attached bearings 11 designed to support a longitudinally extended screw threaded shaft 12 arranged centrally between and to extend in parallel relation to the rails 10.

Mounted for travel on and longitudinally of the rails 10 is a plurality of carriages 13 which are identical in construction and operation and each comprises a pair of spaced side members or bars 14 provided on their rear faces with dove-tailed bearings 15 which engage the rails and are connected at their upper ends by means of a cross piece 16, in w 'ch is j ournaled a vertical adjusting member or screw 17 equipped at its lower end with a hand wheel 18 and which is threaded between its ends through a cross piece 19 connected to the upper ends of a pair of vertically adjustable carrier members or bars 20 attached respectively to the side members 14 by means of bolts 21 arranged to work in longitudinal slots 22 formed in said side bars, there being attached to the side of one of the carriage members 14 an open bearing box 23 in which is arranged a hand wheel 24 threaded onto the screw shaft 12 and operable for adjusting the carriage 13 back and forth longitudinally of the machine while the carrier bars are adjusted vertically on the bars 14 by means of the adjusting screw 17.

Attached to the lower ends of the carrier members or bars 20 are bearing boxes 25 in which are ournaled equipped with a belt means of a belt 28, lines in Fig. 2, with a rotary cutter shaft 26 as indicated by dotted pulley 27 connected by the main drive shaft 6, which, it will be understood, may be driven from any suitable source of power, while fixed on and for rotation with each of the cutter shafts 26 is a mortising tool 29 which, as seen more clearly in Figs. 4 and 5 comprises a pair of spaced, circular cutter members or saws 30, provided with marginal teeth 31, and a series of tangentially arranged mortising tools or blades 32 adjustably attached by means of bolts 33 to the bearing portions 34 of a pair of spaced tool heads 35 fixed on the shaft 26 between the saws 30, it being noted in this connection that the blades32 on one of the heads 35 are ar ranged in staggered order relative to the tools on the other head, whereby the blades on one of the heads will act successively with relation to the blades on the com )anion head. Over each tool is a guard or shield 29 for protecting the workman.

Connected between the lower longitudinal frame members 3 is aplurality of transversely disposed cross pieces or timbers 36 having on their upper faces track rails 37 on which is arranged for travel transversely a longitudinally extending work carriage 38 comprising longitudinal side rails 39 sustained on trucks 40 in which are journaled wheels 41 arranged to travel on the rails 37, there being journaled in the carriage a' series of work receiving rollers 42 which facilitate the arrangement, on the carriage, of the timbers to be mortised, while threaded through the side rails 39 of the carriage and at points adjacent the ends thereof is a pair of feed screws 43 journaled in suitable bearings on the frame and equipped at their outer ends with bevel gears 44 in mesh with corresponding ears 45 fixed upon the end of a connecting shaft 46 through the medium of which the screws 43 are simultaneously operated one from the other, there being fixed on the outer end of one of the screws a hand wheel 47 through the medium of which and the connecting shaft 46 the screws may be operated for feeding the carriage back and forth in a' direction transversely of the machine for carrying the work on the carriage to a position beneath and to be acted upon by the mortising tools.

Each of the tool carriages 13 has arranged upon one of its side members 14 a graduated gage plate 48 adjustably secured in place by means of screws 49 entered through slots 50 in the plate, while attached to the adjacent I carrier member 20 is a pointer 51 which co6p erates with the gage plate for permitting adjustment of the carrier members 20 in raising or lowering the mortising tools.

In practice, the timber to be mortised is placed on the carriage 38 and the hand wheel '47 manipulated for operating the screws 43 to feed the carriage rearwardly thus to carry the work beneath the tools as heretofore ex,

plained, it being understood that the carrier relation to the tools or cutters.

members 20 may be adjusted vertically through the medium of the feed screws 17 for positioning the tools 29 to cut mortises of a determined depth, and further that the hand wheels 24 may be manipulated to efiect independent adjustment of the carriages 13 in a direction longitudinally of the machine, thus to space the mortises a desired distance apart.

Arranged on the work carriage is a clamping device designated generally by 52, whereby the work or beam to be out can be firmly clamped in position on and moved with the carriage. This clamp comprises a stationary rear upright 53, Figs. 1, 2 and 7, that is secured to the rear rail 39 or channel iron, by

means of a bolt 54 and clamping plate 55, the clamping plate being disposed under the upper flange of the rear rail of the carriage, as clearly shown in Fig. 7. On the top of the standard 53 is hinged a cross piece or kee er 56 that has a slot 57 at its front end, as s liown in Fig. 12, for engaging over the upper extremity or tongue 58 of the front upright 59. The upright 59 is hinged on a bottom cross-piece 60 by means of a bolt 61 whereby the upright can be swung into a pendent position. The bottom cross piece is preferably a rigid part of the upright 53 and is disposed at right angles to the latter. The front end of the bottom cross piece is secured to the front rail 39 of the carriage by a bolt 62 and clamping plate 63. On the front upright 59 is a screw 64 having a swiveled head 65 at its rear end and an operating crank 66 at its front end whereby the timber, designated by 67 upright 53.

can be clamped against the rear In the present instance, only one clamping device is employed, and in order to steady the ends of the beam, a number of rests are arranged on the carriage.

Each rest, as shown in Figs. 1, 3, 8 and 9, comprises a bottom cross-piece 67 that rests on top of the channel irons 39 and is provided with a strip 68 that fits between the channel irons and prevents the rest from moving back and forth in a direction transversely to the carriage. On the rear end of the bottom piece 67 is a short upright or arm 69 that engages the rear side of the beam. These rests are loosely placed on the carriage and can be shifted longitudinally of the latter. The clamping device is also readily shiftable longitudinally of the carriage by means of the manner of securing the device to the channel irons. When it is desired to place a timber on the car riage, the front upright 59 is swung outwardly and allowed to hang on its hinge and the keeper or top cross piece 56 is swung rearwardly. The timber can then be placed on the rolls 42 of the carriage and shifted in one direction or the other to bringit in proper After the timber is properly positioned, filling pieces or strips 70 are placed on the bottom cross .to its normal position and piece 60 of the clamp members 67 of the rests, thereby resting the timber off the rollers. The upright 59 is then swung upwardly the keeper to its normal position and the keeper 56 swung forwardly to be hooked over the extremity 58 of the upright, whereupon the clamping screw 64 is operated to clamp the timber in position against the rear upright 53. With the timber secured in this manner, the work carriage can be operated by the hand wheel 47 to feed the timber under the cutter.

From theforegoing description, taken in connection with the accompanying drawin 's, the advantages of the construction and of t e method of operation will be readily apparent to those skilled in the art to which the invention appertains, and while I have described the principle of operation of the invention, together with the apparatus which I now consider to be the best embodiment thereof,

- I desire to have it understood that the ap aconnecting the members ratus shown is merely illustrative and t at such changes may be made when desired, as are within the scope of the claims.

Having thus described my invention, what I claim is: -1. In a machine of the class described, the combination of a supporting structure, a horizontal track composed of parallel rails mounted on the structure, a plurality of carriages movable laterally on the rails and each composed of slidably connected parts, and means on the rear part of each carriage for supporting the latter on the rails, a screw extending parallel with the track, means on the rear parts of the carriages engaging the screw for moving the carriages independently, a screw and nut device on each carriage for raising and lowering the front part thereof, a rotary tool on the front part of each carriage, a driving shaft, and a belt and pulley transmission between the shaft and each tool.

2. In a machine of the class described, the combination of a supportin structure, horizontal rails,- a non-rotatabIe screw parallel with and located between the rails, spaced members, devices on the members for engaging the rails, a wheel carried by the members and threaded to engage the screw for moving the members together along the rails, a second set of members slidably mounted on the first members, cross bars of each set together, a screw disposed at right angles to the firstmentioned screw and journaled on. one of the cross bars and threaded on the other for moving one set of members on the other, a rotary shaft on the second set of members, a tool carried by the shaft, a driving shaft, and a belt and pulley mechanism between the shafts.

3. In a machine of the class described, the combination of a supporting structure, a

to directly engage the 8 horizontally disposed track, verticallydis posed carriages composed of slidably connected sections, one section being movable vertically with respect to the other, a screw extending parallel with the track and behind the carriages, means for supporting the screw in fixed position on the said structure, rotatable elements mounted on the relatively-fixed section of each carriage and engaging the screw for independent lateral movement of the carriages, a mechanism 011 each carriage for raising and lowering the movable section thereof, a tool -car rying shaft on the vertically movable section of each carriage, a common driving shaft, and power-transmitting connections between the driving shaft and the individual tool-carrying shaft, said connections permitting of vertical movement of the movable sections of the carriages.

4. In a machine of the class described, the combination of a carriage consisting of side members, and a work holder on the carriage, said work holder comprising a fixed u right, a hinged upright, means for detachab y connecting the upper ends of the uprights, and a screw on one of the uprights and arranged work to hold the latter against the other u' right.

5. In a machine of t e class described, the combination of a carriage consisting of side members, holders mounted thereon for supporting the work, an upright on one of the members, a movable upright on the other member adapted to be arranged opposite the first mentioned upright, a keeper for detachably connecting the uprights, and a clamping device on one of the uprights and arranged to directly engage the work for securely holding the atter on the carriage.

6. In a machine of the class described, the combination of a supporting frame, a work carriage movably mounted thereon, rollers mounted on the carriage for assisting in placing the work thereon, a clamping device adjustable longitudinally of the carriage, rests adjustable longitudinally of the car riage and cooperating with the clamping de vice for holding the work in position, and re movable members on the clamping device and rests for supporting the work off the rollers.

7. In a machine of the class described, the combination of a work carria e comprising spaced channel irons, and rol ers journaled on and disposed between the channel irons, with a clamping device for the work comprising a bottom cross piece adjustably secured to the channel irons, a fixed rear upright, a hinged front upright, a connecting member between the upper ends of the uprights, and a clamping screw on the front upri ht.

8. In a machine of the class described, the combination of a work carriage comprising spaced members, and rollers dis osed be tween and journaled on the mem ers, with a rest loosely mounted on the carriage and comprising a bottom piece ositioned on the said members, means on tie under side of the said piece for engaging between the members of the carriage to prevent lateral displacement, and an upwardly extending arm on the said piece for engaging one side of the work mounted on the carriage. 10 In testimony whereof, I affix my signature in presence of two witnesses.

GUSTAF O. WESTLUND. Witnesses:

G. H. WILSON, W. J. KENNEDY.

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