US955975A - Portable sawing-machine. - Google Patents

Description

J. H. LONGST REET. PORTABLE SAWING MACHINE.

APPLICATION FILED nnu: 20, 1908.

955,975. Patented Apr. 26, 1910.

3 SHEETS-SHEET 1.

.JblmlfLazgysZfeeZ J. H. LONGSTREBT.

PORTABLE SAW-ING MACHINE.

APPLICATION FILED JUNE20,1908. 955,975, Patented Apr. 26, 1910.

3 SHEETS-SHEET 2.

L/a/m/f [10/ 50862 J. H. LONGSTREET.

PORTABLE SAWING MACHINE.

APPLICATION FILED JUNEZO, 1903.

955,975. Patented Apr. 26, 1910.

3 SHEETS-SHEET 3.

anucuroz Witnmd Joint 11 mnesmem, OF GnRmeNrov/N, ##BNNSYLVANIA.

YOR'IABLE 'sAwmG-mAcHiim,

'- 955,975. specitleationot lietters Patent, ht t d A 26 1910 Applicationfilegi June 20, 1:908. Serial N3. 439L487. Q To-a-ll whdm it may concern: 1: thesa-w, such defect being causedeit-hr' by Be it known that'I, Joi -I- H,;Lo -zgS'rREnT, only; a single idin'g me'inber for the carcitizen lofthe United States, residing at Gcr riage being e1 played, or; by nmking the. mantown, in the county of Philadelphia and lconstructioi of the, supporting members .too i Statefof Pennsylvania, have invented new flimsy, or by elevating the center of gravity 6t)- and useful ImprorementsinPortable Sawof. the moving ipar'tsftlo an undue eat-tent big-Machines, offwhich the following is a above the supporting structnre.- To remedy specification. these defects 1 provide a rectangular sup- My nvention relates 'to ortable sawlngfporting frame for bed, 'which, as shown ]ll machine s,=and nii-e- :pa-rticu arly-to' el'cctric- 'Figs 1 to 3', comprises the spaced; parallel 16'5. ally driven devicesfof this character. es'peside memhersj], 2, and the.connecting-menicially. designed for usc'in cutting various hers or crossghracw 4; Theinelnbersil-aud'i kindsof timber in large building operations 2 c )11sit oi Lbeams as shown,- or of' j and in cuttingnplogs in the forest. livooclenl eairis; or other material. Mounted ..0n e-'0 l )jeet ofthef inventionis- -to;provide upon each such sidemembe'r is a track rail, 70. asawi gma h ne 'h 'ch'niay be r adily'li t '3; .which'is preferably of the shape shown," abdut, iQ from, 'place to place b hating-an iuulercut.head,- with which a-partl t\\ o mc n; and: \\hich,-a t the same-timeshu l f the carriag g A 1 Il ejt-l e rigid ty 'reqilired by a practical 1na-- 'I Carrying handles 5; a're secured to each chine; g

end ofithe frameQaud foldihglegs, 6, pr'o- A further object of the invention istopro- 'vided with hinged braces, 6., may,-'if devide means for ins-tiring theeccurateand" fsired. be pivoted-to the frame near.- each 'steat'ly running of the saw, and the proper, end as showm.for-.tl1e'pu1'p0se of support-- A guiding of tliesa'me. iug the same. whelrnot, resting. onthe logs With the above and other objects in view, hei ng' -sawed. y 8 o my invention; consists in 'the' construction lnoi'alile carriage adapted to 'lide on I;

-,a'n dl combination ofiparts.liereinafterdevthe. rails- 3; and suchcarriag'eco prises; "an u t d l mpany spaced members 7,- 8, united by tie rods-11.

ing drawingsfln whilu- .f a liacliof the members1T;8, iswprovided-with Figure 1,is"a side elevation of oneform a'rail-engaging portion 9, (see Fig. 3.)and $5 of my improved portable-sawing machine, may also heturnbhed with altraek cleanooxnplete, sl1owingthesame inpositionk na' ing device It), as illustrated in Fig. 10.' 0g to b g-2 931. plan-viewthereof- 'lhis derive. as shown, comprises plates or Fig.3 is a, sectional elevation of the car; lllzules of sheet metal, secured to the orqsfisria e and associated partson an enlarged [inn 9 of thcoucnihcrs.7,8, and exten ing set! Fig. 4 is a iviews s'iniilar to Fig; 1', tlow:m'a-rdly into contact with the-rail. i- \s' "'bubshow-ing alnlodified form of machine. the 'earriage'. is moved. therefore, itwill Fig. 5 is a. sectional -elevation. on .au cn-f readily be. seen po nt .this cleaner will 'free -.largedseale, of parts of the machine shown the' rail of any accumulations that may hare v in Fig..4.' ;'Fig-.; is viewsimilar tocollected; and prrwcntthem from clogging A Fig; 1, but showing a further n1odificat10u= the carriage. 5 l I Fig. 7 is a similar'view showing; a still furhupportcd hy themarnagq and extending ther modificationof the -invention. Fig. 8 ti-ansvcrscli' between the track rails isan is 8,. Ian Viewof the same. Fig. 9 is'a iew. -electric or other suitable motor, 12; It will e simi a r to Fig; 1, but illustrating stillan- 'he observed that'the frame of the motor is other embodiment of iny invention. Fig.10 mounted directly between and secured .tois a detailpersl'icctiveview illustrating the the members 7 and 8 of the'earriagc. and is trackcleu'ne'r hereinafter described. 'o disposed that a considerable part of it Itjlm's-heretofore been propose'gl to eon-. -depends hctncen the trucks, and r1u 1.-a. very; struct'portable electrically drivenfsa-wing close-1 the object being cu t. This s an machines for use in the forcs t,'butfs uch-prior; important feature of. my 1u\;cnt 1on since.

lnaclii'neslhave proved more or less unsatissuch an arrangement results it} great tal, ul e factory for one reason'or another; -I have ity and stcadluess of .'o le rat1'on, owing tofound that one oftheir-chief fanltsis lack the fact that the axis of the saw'ls brought-f 55 i I Q to the lowest practical position a1ul' tlu:-c en.- 11;

of stability, and nnslteadiness-of running of I famous he of gravity of the motor is very near the pomtpf support.

13'rrepresents the motor shaft, and" on its eirtendedzend, outside of the framebutrunning close-to it, is mounted the vertical saw 20, Ina manner now, to beldescribed. By. reference to Fig. 3lit will be seen that the shaft 13 is provided with a shoulder 14,

beyond which exteridsfai screwf threaded portion 15, and a smooth portion 16, termi nating in another screw threaded portion 17. A combmednut and clamping member l8 is fitted ontojthescrew threaded ortion so as-to-ahut, the shoulder 14. T e saw.

20, isthen placed inposition against; the

member 18, anda second clampingmemher 19 is then slipped over the shaft so as to e?! a ainst.the saw. -A' nut 17 is then screwe .intoplace on the end of the shaft, and serves to maintain the parts in position; The pur-pose of this construction is to allow the inner clamping member to be readily removedfrom the shaft whenit is desired to separate the motor parts for inspection or repair. l j

" The log or timber being operateduponis' represented at 21, and .if desired, 'a grapple hook 22, pivoted to the frameyas at 23, may- 'nected' saw shown inIFi 1- to-3 is very.

. be provided, and formed with-a head .24, adapted toengage the log. The frame is laid across the log as shown, and the car-' riage moved along by hand so as to feed .the-

saw, as required. .While the direct eonsatisfactory, andwill pro ably .be' referred in eneral, it may, in some. caseahe k desirable to employ gearing. In Figs;- 4 to 9, therefore,"l have illustrated various forms of machines in which rearing is interposed "designate correspondin shaft-27, journaled'in the members 8',

. means of exponents.

between the motoran saw.

to Figs. 1 to 3, -Ihave, so far as possible, employed the same, reference numerals to and have distinguishe In Figs. 4 and, 5 Ihave' shown a construction in which the saw 20 is mounted on a which support the motor. I A pinion 26, se-

cured to this shaft, meshes with a pinion 25,"

secured to the motor shaft 13, and the clamp.- ing member 18 is screwed on'to the other end ofthe shaft 27 in the same manner as shown in Fig. 3. The frame or bed of the .fmaehine is, in this instance, composed of between which the shaft27, carrying .the

vertical saw outside of the frame, extends. These members are suitably br; -ed by means of cross bars 4 and the'carriage is provided with track-engaging members 9', which slide directly on the edge of rails l and 2 formed to receive them. It will be noted particu larly that in this construction. both the In" o1'der.'to. show therelation which those figures bear.

or similar parts,..- between themf by motor and saw shafts lie between the bed members, and the latter shaft wholly below the point-of support for the carriage, thereby insuring the greatest possiblestability.

-In the arrangement illustrated in-Fig. 6,. the two shafts l3 and 27 are also arranged side by side, as in Fig. 4, but in substantially ahorizontal plane. 1

that of-=1 ig. -1, except thatthe side members of wood, instead of .l-beams.

InFigs. 8, and 9, I have 'shown the motor- 12, as arranged longitudinally of; the rails I 3' instead of transv ersely','- as illustrated in the other figures, This permits the side members, '1 1=,1, ofthe frame to be placed closer together, and connected by shorter ongated side members, 7, forjthe carriage are provided, in which the'two'shafts are journaled. .Otherwise,. the construction; substantially the samefa's,

'of th eframel are shown as constructed "In 'Fig. '7 the frame comprises airs of I spaced members 1, 1', as iIl-. F1 .4, etween which the SEW shaft- 27 exten s. The car- .riagecomprises gpecially shaped members 7 having 'depen below the rails, th'ns allowing-it tokrun .very

ng portions adapted to supportthe saw shaft aud having the track engaging portions9 at the'extrem'e upper-.' edge thereof. Thisconstruction' permits the motor to swing. down entirely between and close'to the 'obj'ee't being cutjand bri11ging' -it s center of gravity below the'point' of support,

to the adjacent end of the motor hence -;impa rting great stability to the jnachine. The saw shaft -carrie s-.-a; "bevel (gear 31, which engages. asimilarg'ear 3 handle 12", may besecured to'the'motor', "ang'l- 1-i saw ba'ckand fo1th 'aerossthei ogbeing out A similar handle'ma be fastened on the serves as a means for novin tIie-vertieaI,

motors'of the other orms, of 'thehmc-hinetv The construction illustrated'in Fig. 9, is

quite similar to that shown "in"Fig. 7, the only f difference being. that single beams, 1,

are employed for the frame, and tliatthere fore the'carriage members, 7 are of difierent shape. As shown, the members are. reetangular, and .havethe rail enga ing portion 9 secured to their lower edge.

venin' this a1.- rangement, how-.eyer, the motorma-yso placed that it lies artly-below the planeof the rails, thus al owi the body-zoftthe motor torun very clo's tothe object being eut, thereb bringing the shaft and axis of.

the vertica saw to the lowest practical p'o- .movably mounted on said.traokqmilsand comprising ispaced .membersoneof which members is adapted to engage each of said rails", a motor directly supported by the carriage between said spaced members thereof, and a vertically dlsposed circular saW also mounted onsaid carriage outside of the frame, and operatively connected with said motor.

2. In combination, a ortable frame comrising a pair of space parallel side mem ers, end members connecting said side members, track rails secured to said side members, a carriage between said side members movably mounted on said track rails and comprising spaced members extending below the rails one of which members is adapted to engage each of said rails, a vertical circular saw mounted on said carriage, and a motor supported by said carriage between said spaced members, in such a manner as to he partly below the plane of said track rails, and operatively connected with said saw.

3. In combination, a portable frame comprising-a pair of spaced, parallel tracks, a carriage movable on said tracks and extending below the same, a vertical saw mounted on said carriage, and amotor operatively connected with said saw and supported on said carriage partially below the plane of said tracks, 4. In combination, a portable frame comprising a pair of parallel side members, spaced apart and suitably braced, track rails .secured to said side members, a carriage movable on said rails and extending below the same, said carriage comprising a pair of spaced members each of which is adapted to eniage one of said rails, a shaft journaled in earings in said spaced members and ex tendin transversely of said track rails, a vertica saw mounted on said shaft outside the frame, and a motor supported by said carriage between said spaced members and partly below the rails, and operatively connected with said saw shaft.

5. A sawing machine comprising a port- .able frame adapted to be la d transversely across a stick of timber to be sawed, carrying handles at each end of said frame, folding legs pivoted to said frame for supporting the machine when not in use, a carriage movable alon said frame a motor supported upon saic carriage and-\extending downwardly between the sides of said frame, nearly to the under side thereof, a direct motor driven vertical saw mounted on said carriage outside said frame, and a grapple hook pivoted to the side of said frame, and provided with a head adapted to engage the timber to be sawed.

6. In combination, a portable frame comprising a pair of spaced, parallel side members, end members connecting said side members, track rails secured to said side members, a carriage movabl mounted on said track rails and comprislng spaced members one of which is adapted to engage each of said rails, a motor directly supported by saidcarria e between the spaced members thereof, an a vertical circular sawmounted on the motor shaft, and lying outside the frame and in a plane at right angles to a plane-coincident with the two track rails.

7. In combination, a portable frame comprising a pair of spaced, parallel side members, end members connecting said side members, track 'tlilS secured to said side members, a carriage movably "mounted on sald track vrails between the side members of the portable frame and comprising spaced members one of which is adapted to engage each of said rails. a motor supported by .said carriage between its spaced members in such position that it lies partly below the plane of said track rails. and a vertical circular saw mounted on the shaft of said motor, outside of the portable frame and close to one side thereof.

in testimony whereof I have hereunto set my hand in presence of two subscribing wit- HCSSUS.

JOHN H. LONGSTREET. Vlitnesses \V. H. Konucn, Gnonen S. Dnmaxcnn.

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