US1439801A

US1439801A - Island

Info

Publication number: US1439801A
Authority: US
Publication date: 1922-12-26
Anticipated expiration: 1939-12-26

Description

Dec. 26, 1922. 1,439,801.

H. K. B. DAVIS, JR.

SAWING MACHINE. FILED MAR. Z, 1922. 4 $HEE[SSHEET l.

IIIITII 1 Dec. 26, 1922. 1,439,801. H. K. B. DAVIS, JR.

SAWING MACHINE.

FILED MAR. 2, 1922. gsnzns-snm 2.

l i i h Eexflllllllllllllllllllm i 5 Dec. 26, 1922. 1,439,801.

H. K. B. DAVIS, JR.

SAWING MACHINE.

FILED MAR. 2, I922. 4 SHEETS- SHEE1IL Dec. 26, 1922. 1,439,801.. H K. B. DAVIS, JR.

SAWING MACHINE.

FILED MAR. 2. I922. 4 SHEETSSHEET 4- Patented Dec. 26, 1922.

unrrsosrAres HENRY K. B. DAVIS, JB., PROVIDENCE,

BHODE ISLAND, ASSIG'NOR TO THE SWING- EITE CO- ENG, 0F PROVIDENCE, RHGDE ISLAND, CORPORATION OF RHODE ISLAND.

SAWING Application filed March 2, 1922.

To aid whom it may concern Be it known that I, HENRY K. B. DAVIS,

ant State of Rhode Island, have invented certain new and useful Improvements in Sawing Machines, of which the following is a specification.

This invention relates to improvements in the construction of sawing or wood-cutting machines more particularly adapted for operating upon material in strip form and the object of this invention is to provide a pair of saws or other cutters havingtheir working faces set vertically inclined in opposite directions to operate on opposite sides or edges of the work and to cut the work preferably with beveled sides it is passed through the machine.

A further object of the invention is to provide means whereby the work support may be vertically adjusted in its carriage relative to the saws or cutters so that the depth of cut may be regulated, and also to provide adjustable means for the work-support whereby one end maybe raised relative to" the other to obtain an end-to-end taper on the work and to regulate the extent of such taper.

A still further object of the invention is the provision of a work-support having elevat-ions or depressions in its work-support- .ing surface and cooperating means for bond ing the work to follow the contour of the support whereby when the di'llerentvstrips are cut by the saws or cutters the finished product will have the contour or shape desired.

With these and other objects in view, the invention consists of certain novel features of construction. as willbe more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure l is a side elevation of my improved sawing machine and showing a por tion broken away to better illustrate the intermittent driving mechanism for the work carriage.

Figure 2 is a plan view of the machine. 7

Figure 3 is a front elevation of my improved machine. 1

Figure dis a side elevation partly in section showing the carriage with the work-support adjustably mounted therein MACHINE.

Serial No. 540,578.

Figure 5 is a perspective View showing an end portion of the carriage.

Figure 6 is a perspective view showing an end portion of the work-support detached from the carriage.

Figure 7 is a side elevation of the worksupport which is provided with raised and depressed portions along its work-supporting surface whereby a thin neck portion of undulating shape may be formed in the work when out by the saws.

Figure 8 is an end elevation at the section line 8-8 in Figure 4 showing the carriage as mounted in its dovetailed ways and the screw adjustment for raisingthe work-support in the carriage.

Figure 9 is an end elevation showing a section of the work-support with the work mounted thereon and showing the presserfoot as supporting the work while bein cut by the saw on the opposite side "thereon Figure 1.0 is the same as Figure 9 showing the pressenfoot and the roller-guide for holding the work onto its support and assisting in supporting it while being cut by the saw on the opposite side.

Figure 11 shows the'work on its support after having been acted upon by both of the saws. i

Figure 121's a side elevation of the work guide supporting frame mounted above the work and. adjacent the operating position of the two saws and showing the guides for supporting the work while being acted upon by the saws.

Figure 13 is a bottom edge view of the guide frame inverted with its various workguiding members.

Figure 14: shows a finished strip of mate rial cut into \l shape in cross section and tapered gradually from end to end.

Figure 15 shows a strip of finished material as V-shape in cross section varying in its size and taper, being smaller at a point intermediate its ends due to the acting of the saws upon the stock while in a bent or distorted position.

Figure 1.6 is a perspective view showing the end portion of a sectional shaft built up of a series of V-shaped strips cut on my improved sawing machine.

Figure 17 is a detail showing a dash-pot for cushioning the carriage at the outer end of its stroke.

Finn re 18 shows a modified form of" a single cutter having a beveled face..

Figure 19 shows a pair oi the cutters shown in Figure 18 assembled to provide a disc having a V-shaped cutting groove.

it is found *in practice desirable to provide sectional "shafts for "arious 'inlrposes such for instance those used in the ronstruction 01? golf clubs, base ball bats, and other purposes in order to nicely control their weight and flexibility, and it .is particularly desirous in the (tonstruction1.051? shafts 't'or golf clubs to formethem oi. atou-gh, fibrous material such for instance as bamboo and the like which is verylight in Weight and of the desired flexibility, rigidity and toughness and in order to properly prepare the bamboostalk I first split it into st "ips-and then saw the strips into substantially .V- shape in cross section and subsequently build up or form the completedshaft of a plurality of these sections. My present invention, Fhoweve'r, vrefers to a sawing machine *for preparing these strips and the following is a detailed description of one construction of suchma chine by which the strips may be cut into thedesi-red shape to be qassernbled.

With reference e'tO the drawings 2U designatesthe bed'o'f my in'iproved sawing ma- .chine, which is pro-videdwith dovetailed guid s-21 in which-the carriage member 22 slides. lhis rarriage member is provided with anarro'w, upstanding, central rib 22-3 which,is longitudinallyigrooved as at A tor ,tlie receptionof'the work support 25, and at the opposite ends'of the carriage this rib .is'but away at :26 and a screw-threzuled adjustmentqstud 27 is threaded into these cut-away portions of the carriage, the upper endi28ioffthescrew engaging the under side of the Work-support and an adjusting "Wheel mountedonjthe stud, the same being graduated on its edge to cooperate with a pointer 30 whereby a micrometer reading of the adjustment of the su iport may be obtained. This screw member ish'ionnted at either-endof this carriage thereby permitting the same to be adjusted vertically bodily to determine the depth oil the saw cuts in-to' the worker one end of the support maybe raisedrelatireto the other to determine t'lie end tmend taper ofthe cutsby the saws.

El e saws 3-1,:as-bestillustrated in Figures =2 *and 3, are. preferably mounted upon the saws-being arranged. to overlap each other by the worm {l1 and worm-wheel L2, and I haVeconnected a weight 43 by acord .44 at 115 to the under side of the carriage whereby when thegearBQ has made a revolution to move the carriage with its work through the machine it then presents its blank space 46 to the rack which thennnder action of the weight;43,;permitsthe carriage to return quickly to its starting position, the finished work is now replaced by fresh work by whichtime the teeth of the gear beyond the space again engages the rack repeating the advancing,- operation of the carriage to presentthis fresh workto be operated upon by the saws.

To facilitate setting of the work upon its supportl have provided a fixed table ll supported by brackets 48 lirom the base of the machine in position to earrya number o't-untinished straps on one side, while the opposite side of the table is provided with guide fingers -.-l-9 set upright on the table to facilitate the rapid and accurate positioning of the work onits support. To assist in holdin the outer end of the work I have provided a spur member 50 located on the end of the work-support see Figure 4,

edge of this supporting member 635 is "prob erably grooved as at 51 pi.'o\-*i(flin; a pair oil? spaced apart, sharp, bearing edges 53 on which the work 52 rests.

it is found. in practice that owing to the varying *urvature in moss section. oi" outer l and more secure support-1s pro 1 L portin the work on two spacedapart edges 1g lel'igthways oil: the we l. illuss 8 to ll inclusive. The work i. .irst positioned on. its sup port with its outer curved siu'face resting upon the edges 533 o f the support, its outer end being secured to the support by 8. 619111 50. The work by -means oi its carriage is new advanced beneath the guide roll 54: which is mounted between pair of arms 55, pivoted at 56 on the frame 57 and is under tension of spring 68, which rol-l serves to press the Work downfirm-ly vonto its sn pport. The work is next engaged by the resser-toot 58 which is hinged at 59 and is pressed inwardly y spring 60 being lin'iited in its inward swing by a screw 61. in the finger 69;. This presser foot serves to press and support the opposite edge of the work while beingacted upon by the first saw 31, see Figure 9. The work now ad- Va-11068 and the strip which is being sawed from the work is engaged andseparatedor sprung ofl' from; the work by the splitter finger 64. The first sawed surface on one side oi the work is now engaged by the beveled roller mounted in the adjustable arms it) which rolls cooperate with the messer-ii'oot (iii to hold the work down onto its support while the second saw 31 is operating on the opposite side of the Work thus acourately controlling the depth of cut to be taken by this second saw and as the work still further advances the member 67 splits or springs oil the sawed portion from the strip While the presser-foot 68 engages the outer end of the work to continue to hold it in position. on its support until it l1as entirely passed. through the machine and been operated upon by both the saws.

Each. time after, the work has been passed. through the machine, the blank portion 46 of the gear is presented to the rack 38 permitting the carriage to quickly return to its starting position under action of its Weight 43, when the finished work is removed and replaced by fresh work ready to be passed through the machine as above described.

When a. shaft witll' a straight taper, is

desired to be producecha work-support sinn-v lar to that illustrated inFi 'i'ire 4.. is ureca J i vided having a straight taper from end to to the minimum.

end that is its supporting edges converge and one end of the support is raised higher than the other, thereby producing work such as that illustrated in Figure 14 with a straight taper from one end to the other.'

By providing converging supportirm edges it will be seen that the work is always supported close to the line of out thereby reducing the possibility of spring of the Work Where work is produced such as that illustrated in Figure 15 having such for instance as a reduced neck por at 69 and an enlarged end portioiii work support havi a support. similar to that illustrated in Figs-.1? is provided wherein araisedportion 71 on the support corresponds with the reduced portioi'i 69 in the work and the reduced portion 72 in this support corresponds to the enlarged portion 73 in the Work so that when. this shape of work is desired this style of support is employed and the work being 01"? a flexible nature is pressed by the diiferent presser members down onto the support and caused to follow the supporting contour thereof so that after having been sawed or out, when tion.

sprung to normal will correspoiiul to that of the contour ot the support as illustrated. in. Figure 15. or the contour of the support may be in any desired form to produce work ot'any desired. shape.

in. order to absorb the shock. oi the i'apidly returning-,2; carriaire 1 have mounted a spring butter or dash pot 741 which is engaged by the carr e as it MQPLOtlQllQS the outer end ot its $131 oketo send it back to its starting posiln some instances instead oiemploying: saws set at an angle for cutting: the wood. a pair of cutters 75 each having its teeth set at the desired angle to the plane of its face or the plane of its rotation maybe employed such as that illustratedin Figure 18, or in still other cases a pair of such cutters 76 may is set together providing a single cutter having; a V-shaped toothed groove, may be employed such as that illustrated in Figure 19.

By the use of my improved sawing or outti ng machine the edges of strips of materials may be very rapidly sawed with beveled edges or it may be substantially V-shape in crosssection if desired and the sawed strips maybe assembled. to tormsectiona] shatts or members "tor any desired purpose.

By the use oi my improved machine it will be se :1 that the opposite sides of strips bamboo may be accurately cut at the desired angle in cross section. and also with the desired end-to-end taper and that without. disturbing or removing the outer surface or shell of the Wood which is extremely hard and tough and which it is very desirable to be preserved inorder'to obtain the maximum. strength to the built-up shaft formed of it.

The foregoing description is directed solely towards the construction illustrated. but ll desire it to be understood that I reserve the privilege of resorting; to all the mechanical changes to which the, device is susceptible. the invention being defined and limited only by the terms oi the appended claims- I claim.

1. A machine For cutting str p ot wood. comprisine' cutters arranged to operate on the oppos te sithi 0d the strip. to out the same on conver lriiigritudinally disposed e? strp support in the machine having a relativelylongitudinal. travel with re pect to the cutteni. and me itor Ettljltf-itill 4' ends o l id siji iiport i or tically to set iton an incline lo the plane o i said longiindiiuifl travel. whereby the out tars are caused to cut the strip on an end-toend taper as it passes through the machine.

2. A machine for cutting a strip of wood comprising cutters arranged to operate on the opposite side edges or" the strip to cut the same on converging angles, an extended support for the Work having end-to-end ters and support having a relative longitucon verginv' strip-supporting edges, the cutdinal travel and means for separately adjusting the opposite ends of said support vertically relative to the cutters to determine the inclination of said support to the plane of said travel by Which an end-to-end taper of the stripmay be produced by action of the cutters upon it.

3L In a machine "for cutting strips of ood, a carriage, means for driving the same, a strip-support in said. carriage having end-to-end converging strip supporting edges, cutters for operating on opposite side edges of the 'stripto cut the same on co11- verging angles, and means for adjusting said support in said carriage relative to said cutters to control the depth of cut and Wood, cutters arrangedto operate on oppositely-disposed vertically-inclined planes to also to produce an end-to-end taper of the strip by action of said cutters upon it.

4. In a machine for cutting strips of Wood, inclined cutters arranged to operate on opposite sides of the work to cut the side edges thereof on a bevel, a longitudinallymovable carriage, a Work-supporting memher mounted on said carriage, andmeans for providing relative vertical adjustment of the ends of said support in said carriage whereby its height and inclination may be regulated to determine the depth of the cut and its taper from end to end.

5. In a machine for cutting strips of wood, cutters to operate on oppositely-disposed vertically-inclined planes to cut the sides of the ork to ii-shape, a longitudinally-movable carriage, a vvorlnsupport mounted on said carriage and having a vertical screw adjustment at its ends whereby the depth of the cuts and the 'end-t0.-end taper of the Work may be regulated.

6. In a sawing machinehaving a pair of saws arranged to operate on oppositely-disposed vertically-inclined planes to cut the sides of the Work to V-shape, a longitudinally-movable carriage, a longitudinallydisposed Work-support on said carriage havinga longitudinalconcavity for a portion only of its Work supporting surface, and presser means for depressing the Work into said concavity.

7. In. a machine for cutting strips of Wood, a carriage, means for driving the same, a strip support in said carriage, cutters for operating upon opposite sides of the strip to cut its edges on converging angles, a Work-support having a longitu dinal depression in it for a portion. only of the length of its Work-supporting face, and a fixedgnide member for depressing aportion ,of'the Wonk tojfollo v the contour of said depression.

8. In a machine for. cutting strips of Wood, cutters to operate on oppositely-dis posed vertically-inclined planes to cut the sides of the Work to V-shape, a longitude of its length, and means forbending the Work to follow the contour of said Work;

support as it is presented tothe cutters soas to produce acurvecl contour in the Work.

9. In a machine for cutting strips of u th s des of the Work to V-shape, a longitudinally-movable carriage, a Work-sup port mounted on said carriage, the Work-engagi g section of said support being P vided With a longitudini 1 v concavity for a portion of its length, anda presser member fixed relative to the carriage for bending the Work to follow the contour of its support While passingand being acted upon by the cuttersto produce a curved contour inthe work. i l

10. In a machine for cutting strips of Wood, a cutter arranged to operate on oppositely-disposed vertically-inclined planes to cut the sides of the Work to V-shape, a longitudinallynnovable carriage, a verticallyadjustable Work-support mounted on said carriage, and a relatively-fixed frame carrying one or moreyieldably mounted down- Wardly pressing and laterally guiding and supporting members for retaining the Work in proper position on its support Whilebe ing acted. upon by said cutter. l

11. In a machine, for cutting a strip of wood, cutters arranged to operate on opposite sides of the Work and vertically-ins clined in opposite directions, a longitudinally-movable carriage having a longitudinally-disposed grooveltherein, a Work-support adjustably mounted in said groove, screw-threaded adjustment for moving said support vertically in said groove, and means for locking said support in adjusted. position.

In. testimony WhereofI afiix my signature.

HENRY K. BQDAVIS, In. j