US1674003A

US1674003A - Electric handsaw

Info

Publication number: US1674003A
Authority: US
Inventors: William P Casey
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-10-24
Filing date: 1924-10-24
Publication date: 1928-06-19
Anticipated expiration: 1945-06-19

Description

June 19, 1928. 1,674,003

w. E. CASEY ELECTRIC HANDSAW Filed Oct. 24, 1924 2 Sheets-'Sheet l Ill i Hf 62 June 19, 1928. 1,674,003

w. P. CASEY ELECTRIC HANDSAW Filed oct. 24, 1924 2 sheets-sheet 2 o 415 J2 f5 6/ f5 Patented .lune 19, 1928.

UNITED STATES WILLIAM P. CASY, OF OSHKOSH, WISCONSIN.

ELECTRIC nANnsAW.

This invention relates to certain nevi7- and useful improvements in electricv hand saws of that type which is readily portableand preferably capable of general use in the Wood working and kindredart's."

It is one of the objects of thisinvention to provide a compact, unitary,` well-balanced electric hand .saw with which ditlierent types of cutters may be employed to be adapted for various types of' work;

In electric hand saws of' that typeillustrated in Letters Patent No. 1,497,067, granted me the th `day of June, 1924, the gear housing' and motor are arranged end to end. This arrangement produces a very satisfactory tool, although it is somewhat unsatisfactory for certain `types of work' by reason oitso'verall length and this invention" has asl another object the provision of atool'of the 'character described of decreasedove'rall length. i c

Another object' of'this invention resides in theprovision of a tool of the character i describedin which the tool adjusting meniber works on 'an axis arranged' at substantiallyy right angles'to the aXis of the drive motor. l

` A further object ofthis invention resides in` the provisionj of a tool of thecharacter described in which" the gear housing and motor are disposed at right angles with their axes intersecting the motor shaft extending into` the gear housing for a drive connection'withthe tool'arbo'r'. i

And a still further object of this invention resides in the provision of an iinproved'tool ofthe character' described in which the gear housing is rotatably mountedi at 'either end andy provided'with an intermediate brace carried by the drivemotor and, if desired, providingr means for closingpthe elongated opening throughvvhich the motor shaft projects into the gear housing.

With the above and other objects in view which willl appear as the description proceeds, my invention` resides in the novel construction, combination and arrangemcntof parts'substantially as hereinafter described and more particularly defined by the appended claims, it beingunderstoodfthat such changes in the precise embodimentof the hereindisclosed invention may be made as come' 'withinthe scope of the claims,

In the accompanying drawings, I have illustrated one complete example of the App1icaton led October 24, 1924. Serial No. 'Wl-5,634. i

physical embodiment of my invention constructed` according to the best mode I have so fardevised for the practical application of the principles thereof, and in which: Y

Figure 1 is a top plan view ot' a tool embodying my invention, parts thereof' being broken away and in section to more clearly illustrate details of construction; l

Figure 2 is a view,partly in transverse section and partly in elevation, taken through Figure 1 on the plane ofIk the line 2-2,`and i g f Figure 3 is a view, partlyinsection and partly in elevation, taken through Figure 1 on the plane of the line'3-34 Referring now4 more particularly tothe accompanying drawings, in which like numerals designate like parts throughoutfthe several views; the Anumeral 5` desighatesia base member of substantially rectangular form and having its `under-tace or surface r(i trued for engagement with the work, the

work engagingsurface being provided with a slot 7 to receive a suitable mitre attachment, not shown.` n v j Mounted adjacent one side of the base member is an'elongated handle 8 which is secured between'a' pair of uptsanding menibers 9 andi() carried by the base at its ends,

the member 10 having provision for mounting a switch 11 included in the feed wires 12 of the drive motor 13. A shorter handlelll is mounted adjacent the'opposite sideof the base member, substantially parallelk to the handle 8, and is confined betweenltvvo upstanding members 15`and 1G. The member 15 is carried by the end of the-frame oppositemember V9 andmemberl is'position'ed adjacent theside of the' frame but'm'edially of the ends. y Y

The motor 13l is suitably mounted on the the base member between the handles "8f and 14 with its inner end terminating approxi- 'm'at-ely on* a plane withthe memberl, the

drive shaft 17 `of the motor being extended therebeyondin'to' a gear housing ISthrough an elongatedk slot or opening 19 in the side wallthereof. The gear housinglS is mountedxon that portieri of thel base "member between the handle member 16y and the base member endQO andS ispreferably" vformed with one end'pcrinanentlyclosed by awall 21 and its' otherE end'closed bya` removable end wallv or cover: 22 which is securedv in position'by cap screws or other' means 23.

Cil

A center recess or pivot opening 24e is tormed in the outer face of the end Wall 21 to receive the inner pointed end 25 of an ad justable pivoty Q6 which is threaded through the lower end 27 of a suspension strap 28 carried by a standard :29. The standard 29 is mounted on the base member adjacent its outer edge 80 by suitable fastening means 31 and has a horizontal bore 3:2 in which the adjacent end ot the gear housing 'freely rotatably tits.

The end Wall 22 is provided with a journal or boss 33 which is in axial alignment With the center recess Q4 and is journaled in a bearing 3st termed in the upper end of a standard 35 carried by the base member. The bearing is in axial alignment with the pivot 26 and the gear housing is held against longitudinal movement by the adjustable pivot '26 and a shoulder 36 formed at the inner portion of the Ijournal 33 and engaging against the bearing 34. Lost. motion or slacl; is taken up by the adjustable pivot 26 which is readily releasably secured in adjusted position by a lock nut 87.

The gear housingr 18, as above described, is mounted for rotation, but is tirmly held against vibration and may be secured in any position of adjusment by a binding nut 38 threaded on ay screw 39 carried by the gear housing and passed through an elongated slot 40 in a strap 41. The strap 41 is slightly spaced inwardly of the standard 9.9 and is secured in position by suitable fastening members 42. Vben the binding nut 38 freed of strap 11, the gear housing may be freely rotated within the limits of the slot by a handle member 43 provided for this purpose and when the gear housing has been rotated the desired degree, it is firmly secured against rotation by bringing binding nut 38 into tirm engagement With the strap member.

The degree of rotation of the gear housing may be regulated by a depth or adjusting ring` 4A rotatably mounted on the gear housing between the strap member 41 and the standard 29. Ring 114 is securable to the gear housing against rotation by a friction screw 45, the inner end of which is adapted to force a plate or shoe 46 into engagement with the gear housing. Formed on the ring 44 adjacent the friction screw 45 is a projection 47 in the path of which lies a lug 48 carried by the strap l11. When it is desired to rotate the gear member a predetermined degree .from its position, the friction screw is loosened to free the ring of the gear housing and the gear housing then rotated to space the lugs t7 and 48 the desired distance. The ring 44 is then made fast to the gear housing by means ot the friction screw 45, the binding nut 38 loosened and the gear housing rotated by means of the handle member 43 to reengage the

lugs

47 and 48 when the binding nut 38 is again made fast to secure the gear housing against further rotation.

Journaled in the gear housing to one side, of its center by bearings 49 and .Btl and having its end 51 extended outwardly thereof beyond the side $3() olE the base member, is a` tool arbor 52, on which is medi-ally secured a pinion gear 53. The Igear 52:) meshes with an intermediate or idle gear 5t suitably mounted in the gear lmusing and meshing With a pinion gear journaled on a stub shaft 56 fixed in a boss 57 extended from the gear housing wall Q1. The gear rotates on the axis of the gear housing and has a sleeve or bushing 58 extended there,- from on which` is splined or otherwise fixed a bevel gear 59 with which meshes a bevel gear G0 fixed in the end of the motor shaft 17 extending into the gear housing. The gears 59 and rotating on the axis of the gear housing 18 pern'iits its rotation to adjust the position of the tool arbor with respect. to the Work engaging tace of the base member without in any manner disturbing the drive between the gears 59 and 60.

As before described, the motor shaft 17 passes into the gear housing through an elongated slot or opening 19 and in order to prevent the entrance ot shavings or other foreign matter into the housing to thus protect the housing, I provide a ring 61 which surrounds the housing at the opening 16 and has an opening G2 therein through which the shaft 17 passes, the ringtl] remaining stationary at all times. as will be readily apparent. As best illustrated in` Figure 3, ring 61 is provided with oppositely extending lugs 63 through which securing means tiet pass to firmly connect the salue with the motor housing whereby an intermediate journal support or brace is provided for the gear housing to thus further .strengthen the same and eliminate vibration.

A saw or other cutter (i5 is secured to the extended end 51 ot the tool arbor and a guard G6 is provided therefor which is suitably fixed on a boss ("7 surrounding the point at which the tool arbor passes out,- Wardly ot the gear housing.

.From the foregoing description taken in connection with the accompanying drawings, it will be. readily obvious to those skilled in the. art to which an invention of this character appertains that I provide a well balanced and eflicient portable saw in which the overall length has been reduced and one which may be used in connection with Various types ot work and which will permit fast and eicient Work.

lVhat I claim as my invention is:

1. In a tool ot the character described, a base member, a housing member, means rotatably mounting the housing member on the base member, a tool arbor journaled in llU the housing member to one side of its axis and having its end extended outwardly thereof to receive a cutting tool7 a drive motor mounted on the base member with its axis at an angle of ninety degrees with respect to the axis of the housing member, a band medially surrounding the housing member, means securing said band to the motor housing, a motor shaft passed into the housing member and a drive connection between the motor shaft and tool arbor.

2. In a tool of the Character described, a base member, a vertical standard mounted on the base member and provided With a horizontal bearing, a suspensionJstrap carried by said standard with its in'iier end in register with the axis of the bore therein, a

'second standard carried bythe base memtatable in the second standard bearino a` 5 pivot member carried by the inner end of the suspension strap pivotally engaging the adjacent end of the housing member, and means 'for securing the gear housing against rotation.

In testimony whereof I affix my signature.

WILLIAM P. CASEY.v