US1820340A - Ice sawing machine - Google Patents

Description

Aug. 25, 1931.

J. c. BABsT ET AL ICE SAWING MACHINE Filed Jue 27, 1930 4 Sheets-Sheet 2 Aug. 25, 1931. J. c. BABsT E1' AL los sAwING MACHINE Filed June 2v, 195o 4 Sheets-Sheet 3 Aug. 25, .1931. J. c.rBABs'r E1' AL I CE SAWING MACHINE 4 Sheets-Sheetl 4 Filed June 27. 1930 Patented Aug.' 2s, 193i y y sawing ice, one' y an adjustable gauge vof the cut produced.

4View whichwill appearl as' In the accompanying- .'Tosnrn o'. Bassi: Ann r'Aivrn-s forcedinto or lifted fromI engagement 'the supporting surface.

lherein disclosedfmay vbe v'made- Figure 2 isa bottom iifrrson, `on'iili'iutnsvrrgmr., AND Josn'rnnunn 0F sr. PAUL,V MINNESOTA f Y a lf ion' s'AjwrNG nncnmn Applcationv leciv .Tune 27,

This inyention relatesto va 'machine for of -itsobjects beings tof-provide a self-propelled`maohine`thesawof which is supported in a novel manner and has' l for yregulating the depth A; further, object is to 'drive the saw :by means of novelv power transmittingmecha-' nism whichI includes 'a di'lerential whereby uniform or equalized power'is transmitted to both ends of the sha-ft on whichthe saw islmounted.

Another object for propelling the is to proyideynoyel means machine along the surface of the ice being cut, the speedfbeing ycon.-

stantly.v under vcontrol ofthe operator andl there beingl a means whereby the ice engaging or propelling element can be quickly with With the foregoing and other objects vin the description they inVentionr'esides-in the combination arrangement of parts' and vin the' details of construction hereinafterl Vdescribed i and claimed, it bein-g understood that changes in the precise embodimentof the invention within Y the scope VofwhatA is claimed without departing from the spirit ofthe invention. 1 1 1' drawings the preferred form ofthe invention has beenI shown.: In said drawings"I 'cv v. 'Figure l is a side' elevation of the machine.-r

planyie'w.v Figure 3 is a vertical-longitudinal section; of themachinathe motor hood being shownv inelevationf gf 'Y y j Y* Figure l is a section on line l-Hi-l., .Figure L the differentialI housing being j shown in elevation. ,Figure 5 is. anenlarged section through the diiferential, said sectionbeing 'taken on the, line 5-1-5, Figure ll. y, i v

Figuref'is asection on line (if-5, VFigure 3( l, Figure 7 isv a View partly'nL eleyation partly in. section of aportion" of the'controlling mechanismr for :the 'propelling wheels. i

Referring proceeds,

Ato tliel vfigures characters ofI` .nailed inthe bearings is connected by a rod 193e. "s'eriai- Na. 464398,'

reference, l designates the. runne'rsof a sled structure', eachaof these runners having its lower surface slightlyv bowed in Athedireotion2v the sled can rock slightly f of its length sothat on a supportingsurface and it thusbecomes possi-'bly readily to'turn the machine.

The sled structure includes side` frame 'members' 2 .on the back portions of which is mounted an internal combustion engine housed `preferably `in a This engine is of ,they automobile typev and its driveshaft l is provided with a gear 5 located in a diiferentiah housing 6.

hood as shown at 3u Extendingtransversely within thehousing.

6` a Atransmission shaft 7 oney end of which isfengaged by a screw 10 whereby the shaft can' be shifted longitudinally to compensate for wear. This screw is mounted as hereini after explained.

i Africtiondisk 1l is secured to thatendof if.

shaft '7 remote'frem thescrew lO'and this diskv has a central recess as shownat l2.

'of oner ofthe frame' members 2' and Vjouris'a shaftV f4: on which -Bearingsl are provided on the outer side A asleeye l''is slidably mounted; This 'sleeve is"V feathered on shaft 1l as carries a friction'dishy 17' which, when in neutral 'positiomV is center of dish 11,v where -it will notcontact therewith because 'of the recesslQ'.

shown atl and disposed opposite @h6 V- i l 'Sleeve' 15 rotates `with-'n a collar( i8? which 19 to a shiftingzlever 20.*' Thus by; means ofthisiuleyer sleeve l5y can be moved'jalong shaft-lllfto bringthe friction wheel 17'to anydesiredjposition relativefto the disk 11 soas l speed desired. The canrbe held in the position-'tofwhfrch parts ytheyhayje Vbeengmovedby means of aI toothed segmentl havingthe usual pawl mechanism 22 forfengagenient. therewith to" lockk the'- lever20yV f y Shaft yllhas gear 28 which meshes 4with another 'gear 24 secured to a transverse'sha'ft 25. These gears may be located ina protectinghousing'26..nl n L 'T1 Mounted tof swing on ythe shaft 25 between the runners y1l is ai frame 27 which .can be suit ably bracedas shown in Figure 2. This frame p to rotate shaft'll in is extended forwardly from the shaft 25 and carries at its free end, a transverse axle 28 mounted for rotation. To this axle are secured wheels 29 having teethv radiating therefrom as shown at 30. A sprocket 31 is secured to the axle and is adapted to receive motion from the sprocket 33 on the sha-ft 25 through a chain 32.

VThe teeth 30 will be held by pressure normally in, engagement with the surface supporting the machine, and it will be obvious that when the teeth are thus located motion transmitted to the wheels 29 through the mechanism already described will cause the machine to move either forwardly or backwardly at any desired speed. 1

For the purpose of controlling the engagement by the teeth 30 with the supporting' surface a transverse rock shaft 34 is used. This rock shaft has a crank arm 35 adjacent to each of the runners 1 and links 36 connect these arms to the frame 27.

Another crank arm 37 is extended from the shaft 34 at one end thereof and to this arm is attached one end of a spring 38. The other end `of the spring is adjustably connected by a chain 39 or the like to a bracket 40.

It will be apparent that by providing spring 38 the teeth 30 will be forced yieldingly into engagement with the surface of the ice, it being possible readily to regulate the pressure by placing the spring 38 under increased or reduced tension.

Another crank arm 41 is connected to the shaft 34 and to this arm is pivotally connected a controlling rod 42 which is slidably mounted in a bracket 43 provided with an opening 44 for the reception of the rod. A tooth 45 projects from the rod and is so located that when shaft 34 is rotated to lift the teeth 30 out of engagement with the ice, this tooth will drop into engagement with the lower wall of the opening 44 as shown particularly in Figure 7.

For the purpose of bringing the rod 42 to the position shown in Figure 7 a link 46 connects the rod to one arm of a bell crank 47 fulcrumed on the sled structure. The other arm of the'bell crank forms a` pedal 48 which, when depressed, will cause the bell crank to pull through link 46 and cause the rod 42 toy lift wheels 29 against the action of the spring 38 and bring the tooth 45 to holding position.

For the purpose of releasing the wheels a small tripping lever is pivotally connected to the rod 42, this lever being indicated at 49. The lever is extended through the opening 44 and bears downwardly on the lower wall thereof at a point between the fulcrum 50 of the lever and the free end thereof. Thus when the free 'end is pushed downwardly it will rock on the lower Wall of opening 44 and cause tooth 45 to be lifted out of engagement with the bracket 43. Consequently spring 38 will be released and the mechanism will be prompt-ly shifted to bring the teeth 30 into engagement with the ice.

The gear 5 in the differential housing 6 meshes with a ring tates a series of radially disposed intermediate gears 52. These gears, in turn, mesh with opposed bevelled gears 53 and 54 and are carried by an intermediate collar 55 which is feathered on the shaft 7 as indicated at 56. Gear 53 is keyed to one end of a tubular shaft 57 which is mounted for rotation on shaft 7 While gear 54 is keyed or otherwise secured to a tubular shaft 58 also mounted for rotation on shaft 7 The collar 55 is interposed between these tubular shafts.

One end of shaft 57 is closed and the screw 10 cis mounted in a threaded opening 9 in said en It will be apparent that the differential gearing which has been described operates in the same way as any ordinary gearing of this type. Rotation of the gear 51 causes shaft 7 to rotate and motion will be transmit ted through the gears 52 to the gears said before, so that tubular shafts 57 and 58 will also be driven but can operate at dif* ferent speeds.

The tubular shafts 57 and 58 are journalled in tubular extensions 59 of the dierential housing 6 and to the shaft 57 is secured a sprocket 60 while another sprocket 61 is secured to the tubular shaft 58.

Angle arms 62 are mounted at one end on the t-ubular extension 59 and extend along opposite sides of an arcuate hood 63 formed of sheet metal and welded or otherwise suitably connected to .the arms. These arms, with their flanges extending laterally away from the hood, as shown particularly in Figure 6, constitute reinforcements for the hood so that it can be made of sheet metal but will be light and rigid. Journalled in the arms at a point concentric with the arcuate wall of the hood is a saw shaft 64 and secured to this shaft so as to extend upwardly into the hood 63 is an ice saw 65 of the circular type. A sprocket 66 is secured to each end portion of the shaft 64 and these sprockets are engaged by chains 67 receiving motion from the respective sprockets 60and 61. Thus it will be seen that power will be applied equally to both ends of the shaft 64 through the differential.

For the purpose of limiting the downward movement of the saw a gauge 68 is employed. This consists of side strips 69 pivotally connected as at 70 to the sides of the hood 63 and merging at their forward ends along curved lines into upwardly extended arcuate arms 71. The side strips can be secured by bolts 72 or the like to fingers 7 3 extending from the front end of the hood. These bolts are adapted to be inserted through any of the gear 5l with which roapertures 74# providedintthe arms 7.1'.y ThusI Legame i face of the ice instead of being projected forwardly and causing discomfort to persons walking in front of the machine.VV

For the purpose of raising and lowering the hood 63 and the sawl 65 a yoke 7 6 vis pivot-y ally connected to the top of hood 63 while its upper end is pivotally connected tov the',y

upper portion of a. lever 77 fulcrumed at 78 upc-n the side members 2 of the machine. link 7 9 connects the upper portion of lever 77 to a lever 8O which is fulcrumed at its lower end on one of the members 2 of the machine as shown at 81. This lever carries a pawl mechanism 82 of the usual type adaptedto engage a. notched segment 83 so as to be held in o-ne extreme position with thev saw and hood elevated above the surface of the ice. There is nothing to limit the movement of lever 8O to the right in Figure 1 exceptfthe gauge 68 contacting with the ice.l

The machine may be provided with guidiing attachments extending fromthe vsides thereof. Each of these attachments can in-y -clude a rod 84 slidably and rotatably mounting the saw, a pivoted structure, apropelling ed in brackets 85 and `having a spring 86 for holding the rod normally pressed downwardly. An arm 87 is extended from the lower portion of rod 84 and has al blade 88 adjustably mounted thereon. This blade is Vadapted to travel in the cuty previously producedr by the machine and. will, obviously, keep the machine parallel with said cut .as it travels over the ice. A brace 89 canbe pivotally connected to the louter ends ofthe'y arm 87 and can be detachably mounted on a lug 90 extendingr from the side of the frame.

`l/Vhen it is desired toraise the gauge o r guide blade 88 it is inerelywnec'essary to llift on a-lever 91 which is connected by a'cliain ,92 or the like tothe lower port-ion of rod 84. s

When the guide or gauge blade 88 is not' to be used, the braceV 89 can be disconnected from lug 9() and fromthe arm 87 and said.

arm can be then swungr laterally against the side of the machine as shown at the lower ortion of Figure 2;V n .o 1 v Y Y Handles 93 can befextended'baclrwardly from the machine-for use whenit is desired to turn the machine after the saw and 'other parts have been'disengage'd from the ice cut.

What Vis claimed is:

l. An ice sawing machine including a sled structure, ice sawing mechanism carried lby' ksaid. structure, toothed lpropelling wheels, yieldingmeans for holding the wheels nor? means forautomatically'fastening the wheelsy in their raised positions, and" means under; lthe control ofwanoperator for releasingthe wheels. v ,Y f

2. In an ice sawing machine the ycombination with a sled-structure and ice sawing mechanism carried thereby, of 'au motonpropellingfwheels, a'support Yfor the wheels mounted for, swinging movement, means (for lifting the wheels under the controlof an operator, means for automatically fastening theL wheels in their lifted positions,vmeans under the control of an operator forreleas-U ing the wheels, and resilient means for applythe wheels automatically-when released to surface ,engaging position.A

3.' An ice sawing machine includingamovi able structure, a motor thereon, sawing mechanism carried by the structure and driven by the motor, a propelling wheel, yielding means for holding the Wheel normally inengage- V ment with a supporting surface,y foot Voperated .ineans for liftingthe wheel, means for automatically holding the wheel in its raised position, means under the control of the operator for yreleasing the wheel, and reversible change Vspeed mechanism for transmittingr Y motionfronithe motortothe wheel when the wheel is in any one of its positions.'

,4. Saw cutting V mechanism including;V a movable structure. a sa'w,a motorfor actuatwlieel carried thereby, a yieldingly restrained roclshaft connected :to the 'pivoted struc member operatively connectedY to the shaft, f

lever actuated means forgshifting said operating member to rock the shaft and raiser thef wheel, means cri-operating with the toothed actuating member for holding it fVY against movement when the wheel is raised',

and a tripping lever carried' bygsaid member for disengaging the member-from its holdving means for 'releasiiigthe Wheelv'to active position. f i, Y

' 5. Janice sawing machine including a porta.ble" structure, hood inoval'ilvk connected theretogfmeans for raising yandl lowering` the hood, `adiustable means forvlimiting theV downward inovement'of the hood`,1aA saw` mounted for rotation in and projectingr below the hood,nie`ans for actuating the saw, and. aflap supported infront of the saw for .sliding engagement with the supporting'sur-v face for intercepting particles of ice thrown" bythe saw and deflecting them downwardly.. 6.7 *,Anpice sawingmachineincluding aportleo.vv

able structure, a saw for cuttingice, an arm foldable against the side of the structure, yielding means for holding the arm depressed, a blade adjustable on the armfor riding in a out produced by the saw, and means for holding the arm against folding relative to the structure, and means for raising the arm and blade against the action of said yielding means.

7. An ice sawing machine including a portable structure, a saw, a rod slidably and rotatably mounted on said structure, a spring for holding the rod depressed, an arm radi ating therefrom, a blade on the arm adapted to travel in a saw cut, and means for raising the rod and arm against the action of the spring.

8. An ice sawing machine including a supporting structure, ice sawing mechanism carried thereby, toothed propelling wheels, yielding means for holding the wheels normally in engagementwith a supporting surface, means for disengaging said wheels from the supporting surface, means for automatically fastening the wheels in their disengaged positions, and means under the control of an operator for releasing the wheels.

9. An ice sawing machine including a supporting structure, a hood pivotaliy mounted in the front end of said structure, a saw mounted for rotation Within and projecting below the hood, said saw being movable with the hood, means under the control of an operator and connected to the hood for raising and lowering the hood and saw relative to the supporting` structure, means adjustable angularly relative to the hood and movable therewith for engaging the surface to be cut at a point in advance of the saw and hood thereby to limit the movement of the saw into said surface, and means supported between the surface en aging means in advance of the saw for deflecting downwardly particles thrown forwardly by the saw while cutting. 10. An ice sawing machine including a supporting structure, means for propelling it, arms pivotally mounted within the front portion of the structure and projecting therebeyond, a hood secured to and disposed between the arms for movement therewith, means for raising and lowering the hood and arms relative to the structure, a circular saw journaled in the hoodv` spaced strips pivotally connected to the hood and extending downwardly` and forwardly relative thereto, arcuate arms integral with the strips and adjustably connected to the hood carrying arms, said strips constituting gauges for slidably engaging the surface to be out, and a Hap pivotally mounted between the arms of the supporting structure and extending between the arms of the gauge strips for slidably engaging the surface to be cut at a point in advance of the saw. v

In testimony that we claim the foregoing as our own, We have hereto alii-Xed our sig-

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