US2676628A

US2676628A - Pole peeler attachment for portable chain saws

Info

Publication number: US2676628A
Application number: US293040A
Authority: US
Inventors: Charles S Hastain
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-06-12
Filing date: 1952-06-12
Publication date: 1954-04-27
Anticipated expiration: 1971-04-27

Description

April 27, 1954 c. s. HASTAIN POLE PEELER ATTACHMENT FOR PORTABLE CHAIN SAWS Filed June 12, 1952 2 Sheets-Sheet l 0/; ar/es .5. Haste/n INVENTOR.

April 27, 1954 C. S. HASTAIN POLE PEELER ATTACHMENT FOR PORTABLE CHAIN SAWS Filed June 12. 1952 2 Sheets-Sheet 2 Fig-5 50 N-sz 1% 45 \60 Charles .S. Hasfain I INVENTOR.

Patented Apr. 27, 1954 PQLE FEEDER ATTACHMENT F'GR- PORTABLE CHAIN SAWS Charles S. .Hastain, North Bonnevillm Wash. Application June '12, 1952, Serial No; zsacw 6- Claims. (01. 144-208);

I The present invention relates to tools. for debarking. or trimming logs or posts and more particularly relates to a log: trimming too-l attachment for use with a portable power driven chain saw.

The primary object of the present invention is to provide a log trimming tool attachment that may he quickly and simplyattached to the motor housing of a portable chain saw whereby the log trimming tool or pole peeler may be driven by the saw motor.

ciprocated by the chainsaw motor for 'expeditiously trimming logs; or posts;

A still. further object of: the present inve tion tor provide a power driven log trimming attachment wherein the log trimming: tool is guided for reciprocation a novel manner;

Still further features. or the present invention reside.- in its simplicity of constructicm,v efliciency in; operation, durability and the. ease with which the attachment may be. mounted on a portable chain saw motor housing.

These, together various ancillary features and. objects which will later become apparent as the: following: description proceeds, are. attained by this invention, a. preferred embodiment of which is; shown by way of illustration only in the accompanying drawings, wherein:

Figure l is a perspective: View of; the log: trimattachment' of. the present invention mounted. on: the: motor housing. ofi a; portable chain saw and being shown inoperative position;

Figure, 2. is atop view of. the: .attachmentwith parts. of the'log tool beingbroken away; a a side view at theattachment also with. parts of the logtrimming; too]; being. broken away; .1

Figure 4 is a. side view of the attachment-alpng section line 4.-4 of. Figure 2: showing. theynouel guide means whereby the: log trimming tool is reciprocatedz;

Figure 5 a sectional; view taken substantially tention'is first directed to Figures 2 -6" shown;

the de'tailsof; theattachment are mostclearly ill The attachment in; itsentirety; is. designated by the; numeral llland; comprises: generally an attaching or mounting plate IL. log trimming tool. 434,. guide means: 1:6. and driving means l8.

The mounting or attaching member l-2. comprises a generally fiat, rectangular shaped plate being rounded. at. one end. as: at 2'0 and. having tapered side edges 22 and. 2.4: tapering. from an intermediate portion thereof toward the other the corners. of which. are: likewise rounded. Anelongated slot 28. extends for a portion of the length of the attaching plate. l2: intermediate the tapering 'si'de edges 22; and 24: and opens into end 26 Tl-Zheziunctiorr of this open end slot 28 is. to facilitate. mounting or attaching: the plate l2 to the: .motor housing of aportable chain saw in a manner thatwfll later become apparent.

Secured: to" one face or surface: of the attachin plate i521 centrally thereof are a pair of. spaced,

parallel bars

30 and 32 having one pair of. ends thereof interconnected. by a. web. 34. The bars 39 and. 3% and: the web 34 are fixedly secured to the surface of. the: plate [2: in any conventional. mannerithroughouttheir length with the bars 30 and M5 being? in 138211811181. relation. to the side edges of; the: plate 1:2 and having. their free ends 36 and 38' terminatmg coextensively with rounded end 23;. of. the: bars 30 and 32 have: arcuate. recesses therein designated by the numerals 4i! and 422;,respectiizely, in. opposed relation to each other on: their facing surfaces. As shown in the preferred. embodiment, the bars: 36, 32 and the web 34: arerintegra'l with one; another and. form a deep flanged channelor U-shaped element.

. .Aeamrshait 44: of the driving means. it! extends cessesem and. 42. Eixedlymounted on thisportion orthe shait4i4bya key 45 is. a d=isk.48. The disk 4'8: is mounted; eccentrically on: the shaft 44 and comprises; the cam for the: cam shaft 44. With specifiareference to Figure 4,. it. will be seen that eccentrieal-ly mounted disk 48 rides between the ar'cuate recesses 40? and 42 of: the bars 30 32,. respectively Fixedly keyed to the other end,- of the shaft which is disposed. on. the other side of the: mounting plate i2 is a pulley 5%) which may; be keyed on. the shaft, although not. shown, the same manner" as the disk. 48. the pulley 520 from. the surface of the plate it a spacing washer which. may be in the form of aoenyenfinnazl; bearing, is mounted- A set. screw 54 extending through a hub 56 of the pulley 50- frictionally abuts the cam shaft 44 to prevent sliding movement of the pulley with respect to the shaft. Thus, it will be seen that driving means [8 comprises pulley 50, shaft 44 and cam 48.

Spaced, threaded bores 58 are provided in the surfaces of

bars

30 and 32 and web 34 opposite the attaching surfaces of these members to plate l2. A rectangular closure plate 80 is mounted on the surfaces of the

bars

32, 32 and the web 34 and fasteners 62 extend through this closure plate and are threadedly received in the apertures 58 to secure the plate to the bars and web. By means of this construction, a longitudinal, open end recess 54 opening at the end 20 of the mountin plate i2 is formed. Thus, plate 60, bars 30, 32, web 34 and that portion of the surface of plate 52 between the bars and web define the guide means it for the log trimming tool [4.

Disposed within the longitudinal recess 64 is a .shank (it of the log trimming tool l4. To maintain the end of the tool shank 56 in abutting engagement with the cam 48, closure plate 60 is provided with a longitudinal slot G8 which corresponds in length approximately to twice the radial distance between the true center, of disk 68 and the eccentric mounting of this disk. A threaded bore '12 is provided in the tool shaft in alignment with the slot 68 and a screw threaded fastener iii extends through the slot 68 and is threadedly received in the bore 12 of the shank 66 thereby permitting reciprocal movement of the tool shank 65 within the longitudinal recess 54.

To maintain the end of the tool shank 66 in engagement with the eccentrically mounted disk 48, a resilient means 74 is provided in the form of a coil spring. One end of the coil spring M is secured to the fastenerfiZ extending into the web 3 While the other end of spring 14 is secured to the fastener ill, thereby constantly biasing the end of the tool shank 56 into abutting engagement with the cam 43 whereby rotation of the cam shaft 44 will cause reciprocation of the tool shank B6. Secured to the other end of the tool shank B6 is a log trimmin blade 16 having a cutting edge 18 thereon. Upon reciprocation of the tool shank 65, the blade 16 exerts a highly advantageous chipping action that removes bark from trees or posts in an extremely efiicient manner.

Referring now to Fig. 1 of the drawings, the -i'fl0lllltll'lg' and operation of the attachment in a bark Stli?pil1g operation can be clearly observed. Shown in this figure is a conventional portable,

power-driven chain saw designated generally by the numeral 813, the housing of which has aforwardly extending vertical wall 82 thereon. Horisontally spaced studs 84 project laterally. from -'tl1e wall 32 and these studs are received between the edges of slot 28in attaching plate l2. To maintain the attaching plate [2 rigidlyzrupon the wall 82, a pressure plate 86 is disposed on the studs 84 so that the plate I2 is confined between this pressure plate and the side Wall 82. Nuts 85 are threaded onto the studs 84 and frictionally retain the plate l2 between the pressure plate 86 and the chain saw housing side wall 82. A pulley 9t adapted to be driven by the motor (not shown) of the portable chain saw 85 is mounted on the housing of the chain saw 3 and a V-belt 92 interconnects the pulley of the attachment with th pulley es. Thus, upon actuation of the pulley $9 rotation of pulley 50 will result thereby causingthe tool shank 66 of the tool M to reciprocate within the guide means I6 of the log trimming attachment and thereby effectively chip the bark from a log or post as indicated at 94.

In view of the simplicity of the attachment, further description is believed to be unnecessary. However, since numerous modifications in the construction and arrangement of th device will readily occur to those skilled in the art after a consideration "of'the foregoing specification and the accompanying drawings, applicant does not intend to be limited to the exact construction shown and described but may resort to any changes and modifications that fall within the scope of the appended claims.

Having described the invention, what is claimed as new is:

l. A log trimming attachment for use with a portable chain saw motor housing, said attachment comprising a mounting plate adapted to be secured to the chain saw motor housing, guide means mounted on said mounting plate, a log trimming tool carried by said guide means for reciprocating movement therein, driving means on said mounting plate adapted to be operatively connected to the chain saw motor, cam means interconnecting said driving means and said tool for reciprocably movin said tool, and resilient means maintaining said tool in abutting engagement with said cam means.

2. The combination of claim 1 wherein said guide means includes a housing having a longitudinal recess therein, said tool havinga portion thereof slidably disposed in said recess.

3. The combination of claim 1 wherein said guide means includes a hOllSll'lg having a longitudinal recess therein, said tool having a portion thereof slidably disposed in said recess, said housing comprising a U-shaped member secured along one side thereof to said mounting plate and having a detachable closure plate mounted on the other side thereof.

4. The combination of claim 1 wherein said mounting plate has an elongated slot opening at one edge thereof for securing the same to the chain saw motor housing.

5. A log trimming attachment adapted to be mounted on a portable chain saw motor housing, said attachment comprising a flat mounting plate, a shaft journaled transversely through said plate, guide means adjacent said shaft secured to one side of saidmountin plate, a disk eccentrically mounted on said shaft adjacent said guide ,means, a tool shank guidingly received in said uide means and having one end in abutting engagement with said disk, a pulley on said shaft adapted to drivingly rotate the shaft, resilient 'means maintaining said tool shank in abutting (engagement with the disk upon rotation of the shaft,. and a cutter bladelcarried by said tool shank.

6. A log trimming attachment comprising an attaching plate, guide means mounted on said plate, a 10g trimming tool slidably received in said guide means, cam means rotatably mounted on said attachin plate and means operatively connecting said cam means to said tool, said tool being reciprocably slidable in said guide means upon rotation of said cam means, said guide means including a pair of spaced elongated members secured in parallel relation to one another on said plate, and a removable closure plate being secured to said bars in spaced parallel relation to said attaching plate, said closure plate havin a longitudinally disposedslot therein, said tool having a pin extending through said slot,

5 and resilient means interconnecting said pin and said closure plate to bias the pin toward one end Number of the slot. 279,266 523,060 References Clted 1n the file of thls patent 5 570 310 UNITED STATES PATENTS 83:395 Number Name Date 1,974,642 Colby Sept, 25, 1934 2,351,739 Blum June 20, 1944 FOREIGN PATENTS Country Date Italy Nov. 7, 1930 Germany Apr. 18, 1931 Germany Feb. 14, 1933 Sweden Mar. 31, 1937