US1174890A - Power-operated saw. - Google Patents

Description

M. E. NAYLOR.

POWER OPERATED SAW- APPLICATION FILEID FEB. 20, I913.

Patented Mar. 7, 1916.

Z SHEETSSHEET 1- m I l I M. E. NAYLOR.

' POWER OPERATED SAW.

APPLICATION FILED FEB. 20, 1913.

Llmfiwc Patented M21127, 1916.

2 SHEETSSHEET 2.

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POWER-OPERATED saw.

To all whom it mey'oonoem.

.Be it known that I, MANsEL E. NAYLOR,

I a citizen of the United States, residing at Cincinnati, in the county of Hamilton and- State of Ohio, have invented certain new and useful Improvements in Power-Open. ated Saws, of which the following is a specification. I v

This invention relates'to a power operated sawandfhas particular reference to apparatus of this character which is well adapted for use in cuttingboards or the like into longitudinal strips. v Animportant object of this'invention is to rovide an apparatus of the above men-' tioned character, which is a time-saver, easy to operate, reliable in such operation, and

comparatively cheap to manufacture.

A further object of this invention is to provide means whereby-the operatormay conveniently control the 'operationbf the tion with the apparatus.

Other objects and advantages of this invention will-be apparent during the course of the following description.

In the accompanying drawings forming a d part ofthis specification and in which like numerals. are employed to designate like parts throughout the same, Figure 1 is a f perspective view of the entire apparatus Fig. '2 is a central vertical-longitudinal sec- 't ional view through the" saw portion of the apparatus, parts thereof being shown in elevation, Fig. 3 is a transverse sectional view taken on line'3-3 of Fig. 1," Fig..4 is a similar view showing a different form of cutting element, Fig. 4 is a longitudinal sec-,- tion through a movable sleeveincluded in driving connecting means, Fig. 5 is an outer 1 fragmentary'side view of a portion of the frame work of the apparatus, parts thereof being shown in section for showing a switch, Fig. 6 is a face'view of the switch block showing the rheostat connected therewith,

I Specification of Letters Patent.

. and 15., The arms 14 spaced openings or notches 23, to receive a Patented Mar. 7,1916.

A Application filed February 20, 1913. Serial No. 749,71?

Fig. is a face View of the opposite side of the switch block, and, Fig. 8 is a fragmentary perspective view of the handle which operates the switch.

In the drawings, wherein for thepurpose of illustration, I have shown a preferred embodiment of my invention, the numeral 9 designates a frame or support as a'whole, compr'ising'horizon'tal side rods 10, which are connected at'corresponding ends with end pieces 11, which are connected by screws or bolts 12, as, shown. I The opposite ends of the horizontal rods 10 are connected with a horizontal. stock or body portion 13, -ineluded in the saw portion of the apparatus, as-sh'own. The'stock 13 carries upstanding arms 14, 15, 16 and 17,. One pair of the rodslOextends through openings 18 and 19 formed throughthe arm 14. The upper rod 10 which extends into the opening 18 does not :pass outwardly-therebeyond, for a purposeto be hereinafter explained. The upper rod 10 of the other pair extends into an opening 20 formed through the upper end of the arm 16. The lower rod 10-0f the same pair extends through openings 21 formed in the arms 16 and 17 and serves-to pivotally support a vertically swinging carriage 22, having its forward end mounted between the up'standing-arms14 and -15,'as shown. ,This' forward end of-the carriage 22 is capableof moving vertically between the arms 14 and 15 are provided with reciproc'atory latch 24, Which-is slidably mounted upon the free end of the carriage 22. This latch is attached to-one end of a reciprocatory rod 25, which operatesthrough openings 26. formed through an enlarged housing 27 of the carriage 22. A compressible, coil sprin 28 serves to normally urge the latch intrthe openings or notches 23.

The rod 25 is moved longitudinally intone direction by a pivoted lever 29, connectefi-v therewith by a flexible element 30,. whic asses beneath a pin or guide roller 31. Be

0w and'adjacent to the lever 29 is a hand grip 32, which is preferably formed integral with the carriage 22. As more clearly shown},

' in Figs. 3 and 4, the housing 27 has one side 33 removable, thesame being held in place "by means of screws 34 or the like.

Rotatably mounted within bearings 35 carriedby the housing 27 and the removable side thereof, is a shaft or spindle 36,

upon which is rigidly mounted a saw 87 or other cutting element. This saw 37 is pref erably detachably mounted upon the spindle 36 and is clamped thereon by clamping nuts 38, between which and the saw are preferably arranged spacing rings 39, as-shown.

In Fig. 4 a diiferent form of'cutting element are dispensed with and Only the clamping nuts 38 used.

The numeral 4ldesignat'es a motor, which is .preferably a shuntwound motor,.but it is to be understood that the invention is in'no sense restricted to-the use of a shunt wound motor, as a series wound or compound wound motor may be 'advantageously em ployed. This'motor 41 is rigidly mounted upon,a transverse horizontal support 42,

provided with depending apertured cars 43 to receive the upper horizontal'rods 10, as shown. The support 42 may be moved longitudinally of the upper "rods 10 to 3S1" sume a I desired position thereon and the bolts 44. A flexible and extensiblevdriving cutter 37 and the motor 41, the same comprising a shaft 45, having a universal con- 36' able sleeve 48, which is slidablyqmounted upon a drive'shaft 49. A transverse pin or spline 50 is carried by the shaft 49 and operates within elongated slots 51. .Rigidly connected with the inner end of the shaft 49 is a small gear 52,'engaging a large gear 53, which is rigidly connected with an armature between the saw.37 and the motor 41 is -self adjusting, and the same is necessary on account of the vertical adjustment which may I beimparted to the carriage 22, as above stated.

The numerals' 55' and 56 designate feed and return wires which are: connected with the poles or brushes of the motor and are hence included in the armature circuit.

Connected in series with the shunt field more clearly shown in Figs. 6 and-'1 is electrically connected with a plurality of spaced contacts 59. nected with resistance coils 60, which'are connected in series, as vJ's-customary 'T-hese ed with spaced contacts 61.. Aspring contact 'arm 62 is adapted to engage with the contacts 59 and 61. The spring contact 62 '59 and 61 and. associated elements are suit-f e5 ably mounted upon-a switch block65, dis

same is locked in such positionyby clamping nection 46 with the spindle 36. At its oppo-. site end the shaft 45 has a universal connec-' tion or joint 47 with a longitudinallymovshaft 54. The drivingconnecting means.

circuit are w'ires 57 and 58. The wire 57, as

The wire 58 is electricallycon' the motor: may be entirely out out of circuit or cut into circuit for receiving the proper amount of current, to-caus'e the motor to stopor operate at a desired speed. Any other form of rheostat or switch may be employed to'control the operation of the motor. 7 5' Longitudinally movably mounted upon" the lower rods 10 is a transverse guide 69, 4

provided witha'longitudinal opening for (receiving a'clamping'rod 70, which is pro vided. with recesses 71, to receive the rods 30.

10, as shown. The c'lamping rod 70 is disposed in, a plane below the lower rods 10, as is obvious. The clamping rod 70- has its free end screw-threaded, as shownat '72, for engaging within a screw-threaded open- 35 ing formed in the end of'the guide 69. A

head 73 -is carried by the opposite end of the clampingrod 70.- The-operation of the apparatus is as fol-' lows :'The transverse guide 69 is fii-st gjo moved to the desired position upon the lowerrods 10, depending upon the width. of the strip to be out: The transverse guide 69 is then placed in engagement with one longitudinal edge of the board, the operator hold- .ing the handle64 in his left-hand and the j hand grip 32 in .his right-hand. It is ob-' vious. that he may readily move the entire apparatus longitudinally 'of the board .and at the same time turn the handle 64 forreguand. q

lating the" operation of the motor 41. also raise and lower the carriage 22.

. 'It is to be understood that the forml-of my Y '1 invention herewith shown and described, is

to be'taken as' a preferred example ofthe' 16-5 same, and thatcertain'changes in theshape,

size and arrangement of parts may be re-'\ sorted to .without departing from the spirit ofthe invention or the scope of the sub joined claims. Y 11o Having thus fully described my inven-' tio'nfI claim:'

1. The combination with a supporting -frame of a shape and size to adapt the same I" to be manually moved longitudinally ofa plank or the like to be cut, of cutting mechanism mounted" upon one end portion ofthe supporting frame: means to raise-and lower the cutting-mechanism withrespect rto the frame, a'motor mounted upon the p V v .supporting frame 'near the central portion resistance 00118 are also electrlcall-y 'connectthereof, extensible selfadjusting driving "connecting means .between the motor and the cutting mechanism, hand'grips connected with the opposite ends ,of the supporting 1'25 I 2. The combination with a supporting 4 with the' supporting frame to frame adapted to-be moved longitudinallyof a plankito be out, guide means conn slidably engage the plank to be cut, cutting mechanism connected with one end of the support ing frame and embodying a hand gr1p,,a

motor mountedupon the supportingv frame between the endsthereof, driving connect lngmeans between the motor and the cut- I operation of the motor v of a shape and longitudinally of a plank or the like to-beteeth, a reciprocatory latch of the carriage and adapted to engage and disengage the, teeth, and a pivoted lever arranged adjacent the connected. with and means to control the embodying a hand grip connected with the opposite end of the supporting frame and movable with relation ting mechanism,

thereto.

3. The combination with a supporting frame size to be manually moved cut, of a guide connected withthelower portion of the supportinglff ame to engage the plank and cause the frame to partake of the longitudinal nfov'ement, a motor mounted upon the supporting frame at' a point substantially e'qui-distant fromthe" ends thereof, cuttingmechanism connected with one end of the supporting frame, driving means between the cutting meohanismand motor, means to raise andlower the I cutting mechanism embodying a hand grip also serving to move the supportingfframe 30 longitudinally, and a second hand grip 0on1 nected with the opposite end of the supportin}; frame and embodied in means to con-. trol the operation of the motor.

4. The combination with'a st'ockpr'ovided with a longitudinally extending opening, of a carriage provided at oneend with-a handgrip and pivotally connected with the stock at a point nearthe handrgrip to swing in a substantially verticalplane longitudinally of the stock, a cutter connected w th the carriage and adapted for movement into and out of the longitudinal opening, spaced upstanding members secured tb the'stock and receiving the free end of the carriage therebetween to serve as a gui and providedupon their inner edges with element extend ing longitudinally hand-grip and operatively the reciprocatory latch element.

of the plank t0 connected therewith-and'.-adapted to cut the plank longitudinally upon the movement of de means therefor 5. The combination with a" main framebf a shape-and size adapted to be manually moved by a single operator longitudinallyone end of the main transversely thereofand provided with. a

longitudinally extending opening, a carriage provided atone endwit a hand-gr1p and pivotally connected with the stock near the hand-grip -to be I swung, .in a, vertical-plane longitudinallyof the stock and with relation thereto, connected with the pivoted carriage between the ends thereof, almotor mounted upon the main frame between-the ends of the same, self compensating connecting means between the motor and the rotatable cutter, means to control the-operation-of the motor emframe longitudinally ofthe plank,

the main with the mainframeand a guide connected adapted to cause proper longitudinal path with respect to the plank, means connected with the cuttingmechanism to drive the to control the operation of the first named means embodying a hand-grip connected with the main frame to,also serve as means for effecting the i In testimony whereof I afiix my-signatur'e in presence of two, witnesses,

.MANSEL EAGLE NAYLon.

Witnesses JOEL F.'KINNnr,

I. M. Smnuenn.

a rotatable cutter substantially bodyirig a hand-grip connected with that end of'the' main be cut, of cutting mechanlsm the same to travel in the h same, and means 55 of a plank to be cut a stock connected with frame and'extending' movement of the main frame longitudinally of the plank,

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