US1309781A - Portable saw - Google Patents

Description

A. F. SCHOOL. PORTABLE SAW.

APPLICATION FILED MAY 3. 19I8. Patented 15, 3 SHEEISSHET I- INVENTOR INITNESS: 7%% 97504 I BY I ATTORNEY THB COLUMBIA PLANMRAPM c0., WASHING. D. c.

A. F. SCHOOL. PORTABLE SAW. APPLICATION FILED MAY 3. 1918.

m kw Sn Patented July 15,1919.-

3 SHEETSSHEET 2- INVENTOR 7%%/ ymap/ ATTORNEY wnNEss;

THB COLUMBIA WM?" c0.. WASHINGTON. m C.

A. F. SCHOOL.

PORTABLE SAW. APPLICATION FILED MAY 3.191s.

Patented July 15, 1919.

3 SHEETS-SHEET 3- \HIHHHHHI WiTNESS:

ANTHONY v F. SCHOOL, 013 SOUTH KAUKAUNA, WISCONSIN.

nonwnnnn SAW.

Specification of hetters latent. July 15, 1919.

o all whom iii-m y con rn:

Be it known that I, ANTHONY .F- 10 1, a c tizen of the ni ed S a es, nd residen of South K aukauna, the county of Ontag inie and State of Wi c n in, have in e t d ce t n new a d usef l Improvemen in Port ble a d I do h by d clare that the fo lowing is a ful clea and exact d Sci-i tio the eof y nvention la s o new a d use ul mp ovemen s in po e d iven s ws, pa rieul rly th se of a readily port ble newne- At the pres nt me most sa s oi this gener l type are so constr c ed that hey can only operate upon a log of Wood on the ike when the same is positioned hor zon ily- It is therefore the princ pal obje t of the presen nvention to pnovid a saw wh h will operate either wh n it is po itioned ventically or horizontally. I .I-tis also an .oibjeet of th invent on to provide means for negnla ing the height of the cutting edge of the saw above the of the ground so that logs or the like of different diameters may be cnt with equal {andity.

A still fnrthe object is to provid mea for retaining the cutt ng edge of the sa substantially parallel to therground irrespective of height of the same thereabo e- With these and other objects in the invention resides in the novel features of construction, combination and ar angemen of parts which will be hereinafter more particularly described and claimed.

In the accompanying drawings Figure 1 represents a front elevational view of a portable power driven saw constructed in accordance with my invention, parts being positioned to out a log disposed honizontally.

Fig. 2 is a plan view of the parts illustrated in Fig. 1.

Fig. is a side elevational View of the invention illustrating the two positions in which the saw carriage may be disposed.

Figs. 4 and 5 are detail transverse sectional views taken respectively on the plane of the lines and 55 of Fig. 2, and

Fig. 6 is an enlarged detail sectional view showing particularly the means for slidably connecting the saw carriage adjnsting'memher with the saw carriage frame,

Referr ng moire Particularly to th accompanying dnawings in whieh si il ref ne haracters ndicate like pa ts th oug ou the several iews, 1 den tes a llp'pflrting frame pre erably rectangu ar i p an v ew whieh may he const cted f a y es d tslfiai and i snpnorted a one end by a hai of g onnd ngaging h els 2 and a its othen nd by a leg 3- At one end of h suppo t ng fram i di p se an in ernal o mib-nstion engine E, he sha t 4 oi hi h is tended and has its free end journaled in a sui able bearing 5..

At the opposite end of the supporting frame and ndiae nt the ide edge th reof is a hair of al ned e ings 6 in whiQh a tran ve she-ft is m d, s d sha t being Preferably dispo ed para l l t t e s a l Of said shafts has .a sprocket wheel 8 fined thereto, wh ch sp ocket wh el are ne ted by eha n or h like, 9,. The sh forms a pivot f r a saw carriage fr me the lat r being ad pted to be disposed either a hon al pos tion as i ated in Figand in the hill line in Fig. 3., o verii allyas shown by th d tted lines n he l st m n n d f gure. h e r g f a 10 in tnr carries a shaft 11 having at ts ente nd a crank .12- The inner end f said shaft 11 has a bevel gear 13 fixed thereto, the teeth of which are continuously in ith tho e of a bevel pinion 1- fixed to the hai hus it wi l be n t t upo theop rnt o of the engin E, the shaf 4 will h rota ed, th mov men of whi h Wi l be transmitted to the crank 12.

A standand 14- e ten upw rdly fr the saw canniage frame, when the latter is in a horizontal pos tion, and has one end o an .arnuate bracing strip 14 fixed thereto, the o her end of st p being sec r d t h si e of a :1 wh h p j erally from ne nd of a frame 10. The eent r oi the e on which the brac rip is onstructed i the haft 11 whereb said strip may he used as a guide a n er to be he reinaiter more particularly described.

Pivotally mounted on the end of the shaft .11 adjacent the rank :2 is a channeled bar 415 which forms a saw ca iage adj g nnnnber for a saw carriage. 17- One end of ehann led bar i Pnei n b Y een-re to a ca ing 18 wh ch i pivo ed on the sh ft 11 while the other end has a hub casting 19 secured thereto. Thesaw carriage 17 is also of said carriage, being held in-the carriage" by clip plates 22 secured thereto and em- 7 bracing the carriage. This block and the of holes 30 formed therein.

saw are reciprocated by the rotation of the crank 12 which is connected thereto by a pitman 23 secured on a pivot bolt 23 passed through the saw, the outer clip plate 22 and the guide block 22. The saw is further guided during its movement by the sliding 20 engagement of its upper edge with the hooked free end of an arm 24 which is carried by one end of the saw carriage '17. From this it will be seen that the rotative movement ofthe'shaft a is readily transmitted ,to the saw S for operation upon a log or the like L.

As hereinbefore mentioned the saw carriage is adjusted so that the saw may readily operate on logs of different diameters. For this purpose-a lever 25 is secured to the casting 18 so that: the saW carriage adjusting member may be oscillated about the shaft 11; such movement obviously, raises or lowers the free end of the member 16 and consequently the saw carriage 17 and the saw S. The adjusting member 16 is held in any one of its several positions by'the engagement of a pawl 26 carried by the lever 25 with the ratchet teeth of a sector 27 secured to the saw carriage frame 10. The pawl 26 is readily released in a conventional manner.

After the member 16 is adjusted the saw carriage 17 is shifted until it is positioned approximately parallel with the ground. The saw is at the same time moved to a similar position and thus there will be no tendency of one end of the latter engaging the ground as is liable to be the case if such adjustment is not provided. The saw carriage is rocked by means of said spindle 20 and hub 19 when the lever 28 is moved. This lever 28 is positioned in sliding engagement with the lever 25 and carries a detent 29 for cooperation of any one 'of' a plurality In order that this co-action between the detent'29 and the holes30 may readily be carried out, the lever 25 is arcuate, the center of the arc being the spindle 20. I

The saw carriage adjusting member 16 has its free end portion held against lateral movement and isguided when swung about the shaft 11 by the engagement of a channeled guide 31 with the brace strip 14. Fig.

6 clearly illustrates this feature of the invention.

A rod or bar 32 has one end portion slidably and pivotally engaged with the upper end of the standard 13 and its other end carries a spike member 33. Said member 33 ;is adapted to be driven into the log L or the article which is being sawed as clearly shown in Fig. 1; this prevents rotation of the log and holds it relatively stationary. When the article to be sawed is disposed upright, as for instance a growingtree, the saw S is moved to position it horizontally. This is carried out by moving the saw carriage frame 10 from'its normal horizontal positionto a vertical position as indicated by w the broken lines in Fig. 3. This movement will dispose the free end of the standard 13 over the engine E and between the wheels 2. The parts are braced in this position by the engagement of said standard. 13 with the upper end of a post 34, the lower end of which is preferably pivoted to the supporting frame 1. A detachable link 35. secures the standard and post together to prevent the saw carriage frame from returningto 7 its normal horizontalposition.

From the foregoing description taken in connection with the accompanying drawings it will be readily seen that avery simply constructed portable power driven saw has been devised and that the same will bemuch 5 more efficient than the usual device ofthis character inasmuch as it may be readily operated to saw logs and other articles both when they are disposed horizontally and j a when in a vertical position.

I claim p j V r 1. A sawing machine comprising a main frame, a member pivoted on the main frame for vertical swinging movement, a second member pivoted on the firstmember for 'ver- 'tical swinging movement, a saw movably carried by said second member, a drive means onthe main frame, a drive connection betweenthe drive means and saw operative in various relative positions of said members and main frame, a lever connected-with the first named member for swinging the same, said lever being curved substantially on an are having as its center the pivotal connection of the said two members,a lever carried by the said second named memberan'dtrans- 'versing the first lever, means for holding the first named lever adjustably against swinging movement, and means carried by thesecond named lever and engageable with 1 selective portions of the first namedlever for holding said levers against relative:

movement.-

2. A sawing machine comprising a main frame, a drive shaft journaled on theamai'n' V 7 frame, a second frame pivotally mounted on 'the drive shaft, a second shaft carried' by the second frame and extending transversely of the first shaft, a drive connection becarrying member against movement relative tween said shafts, a saw carrying member to the second named frame. 10 pivoted on the second shaft, a saw movably In testimony that I claim the foregoing carried by said member, a drive connection I have hereunto set my hand at South Kaubetween the saw and the second named shaft, kauna, in the county of Outagamie and State means for holding the second named frame of Wisconsin.

against movement relative to the first frame,

and means for adjustably holding the saw ANTHONY F. SCHOOL.

Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). 0.

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