US994380A - Excavator. - Google Patents

Description

- J. P. PARRELLY.

EXGAVATOB.. APPLIULLTION FILED No'v.1z, 19o?. BENBWBD Nov. 4, 1910.

Patented June 6, 1911.

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J. P,.- FARRELLY. 'EXGAVAT0R- APPLICATION FILED NOV. 12, 1907. RENBWED NOV. 4, 1910.

Patented June 6, 1911.

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. whereby the JAMES PETER FARRELLY, OF TORONTO, ONTARIO, CANADA.

EXcAvAToR.

Application led November 12, 1907, Serial No. I401,878.

Specification of Letters Patent.

Renewed November 4, 1910. VSerial No. 590,750.

To all whom it may concern:

Be it known that I, JAMES PETER FAR- RELLY, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Excavators, of which the following is the specification.

My invention relates to improvements in excavators, which forms the subject matter of Letters Patent of the UnitedStates Numd ber 870,943 granted November l2, 1907, and the object of the invention is-lirst-to improve the construction of the excavator, the

shovel, the engine and endless conveyer con-k tinuously driven therefrom and which may be always completely under the control of the attendant of the machine located at a definite pointsecondly-to provide means earth loosened by the shovel may be removed continuously to the opposite end of the drain without the necessity of employing manual labor and at the same time allow of the pipes being laid intermediately of the point of excavation and the point of the discharge-thirdly-to provide a positive and effectual drive for the shovel, which will not only provide for a maximum downward pressure of the shovel at its low speed, but also a quick withdrawal of the shovel and the consequent saving of time incident thereto fourthly 4- to provide means for holding the machine down to its work and obviate any liability of it lifting from the rails should the excavator be employed in particularly hard soil-fifthlyto provide for the excavation of material of any desired depth within practical limitssixthly-to provide means for adjusting the shovel, guides and driving gear therefor, whereby the shovel may bev driven downwardly vertically or at any desired slant or batter, and also adjust the conveyer to suit the position and movement of the shovel. To effect these objects I have constructed and arranged my excavator in the manner, which I shall presently describe.

Figure l, is a perspective view of my machine complete. Fig. 2, is a longitudinal section showing it at work. Fig. 3, is av plan view. Fig. 4 is a detailyshowing the method of connectionof theextensible rack. Fig. 5, is a vertical section through Fig. 4. Fig. 6, is a detail of the mechanism by which the machine is held down to its work.

In the drawings like letters of reference indicate corresponding parts in each ligure.

A A are the rails onVV which my excavator is supported and` which are designed to run along on each side of the path of the excavation as it proceeds.

B and B are the sides, which are preferably formed of double channel iron and C AC are the ends, which'are also preferably formed of channel ironr and suitably connected to the sides, these sides and ends forming a truck frame. 4 D and D are the front and rear wheels and axles respectively, which are suitably j'ournaled under the truck and support the same.

E is the platform supported at one side of the frameor truck of the excavator, and F is an engine secured thereon and having a main shaft F. At the outer end of the shaft F is a. sprocket F2, whichis connected by a chain F3 to a shaft G journaled in suitable bearings G" at the rear of the truck or frame.

I-I is a worm wheel secured on the shaft D and with which meshes aworm I formed on lthe spindle I', which is journaled'in suitable bearings I2 and I3 suitably supported in the truck. The rear end of the spindle I is provided with a miter gear I4. Located on the shaft G are the miter gears G2 G3 having elongated heads formed with the interior female coned clutches with which co-act the male clutches G4 and G5 respectively. The gears Ggand G3 are loose on the shaft and are 'provided with the fe male conical cups G4 and G5 with which the male cones G6 and G7 co-act. The cones Gs and G7 are secured on the sleeves G8 and G9. 2 and 3 are grooved collars attached to or forming part of the sleeves G8 and G9.

4 and 5 are forked bars having at the inner ends pins extending into the grooved collars.

6 is a connecting bar connecting the outer ends of the forked bars 4 and 5.

'7 is a lever secured centrally to the bar 6 and pivoted on a pin 8 on the rear portion of the frame. Y

It will now be seen that by manipulating the lever 7 the drive may be shifted from the gear wheel G2 or G3, so either one or the other is solid with theshaft G and thereby impel through the medium of the miter gear I4 the worm I and thus move the truck backward and forward as required. It will, of course, be understood that the shaft G is always being rotatedas Patented Jane c, 1911.

long as the engine is running and when the lever 7 is in the central position the truck or carriage will remain stationary.

On the opposite end of the shaft F to that on which the sprocket wheel F2 is situated I secure a sprocket wheel Fl, which is connected by a sprocket chain F5 to a sprocket wheel J on the cross shaft J. The cross shaft J is journaled in suitable bearings on the side bars of the frame and is provided with a pinion J 3 and clutch mechanism K comprising the sleeve K having the male end cones K2 and annular groove K3, and the female cones K4 and K5. The sleeve K is loose on the shaft and the cones K4 and K5 are secured to the shaft.

KG is a forked lever pivoted on the bracket K7 and having the inner forked end pro jecting into the annular groove K3, and the outer end connected by a rod KS to the controlling lever K9 pivoted on a bracket 8 secured to the side bar of the machine, and having the handle hand within easy reach of the operator of the machine, who would stand at the rear thereof.

The shaft J is provided at one end with the pinion J t for a purpose, which will hereinafter appear. The pinion J 3 meshes with the gear wheel L on the cross shaft L', which is journaled in bearings L2 on the side bars lof the frame.

M is a cross shaft journaled in bearings M and provided with gear wheels M2 M2, which mesh with the gear pinions L12 on the cross shaft L. The pinion J4E also meshes with one gear wheel M2 at the inner side of the machine as indicated.

M:s are shrouded -pinions, which are secured on the shaft M and mesh with the racks N. The racks N are secured to the upright bars N by bolts N2. Both racks and the upright bars N are made in sections, the uprights being fastened together by channel iron bars N2, which break joint with the bars N and are suitably bolted to them by bolts N4. As the racks and upright bars to which they are secured and angle plates are made in sections it will be understood that they may be made of any desired height within definite limits, and thereby provide for excavation of more or less depth. To the bottom of the lowermost bars N is suitably secured the spade or' shovel N5, the cross bar of such spade or shovel being formed hollow and bridging the bottom ends of the bars N.

O are uprights, which are journaled on the shaft M at the front and have tongues O formed in them, which extend into the channel iron sides of the racks.

P is a shaft journaled in suitable bearings in the upright O and carrying the friction rollers P, which abut the back edge of the racks and thereby insure of the even movement of the racks.

stesso P2 and P3 are cross bars connecting the lugs formed at the tops of the uprights O to the front and bottom of the rack respectively. The uprights O have tongues, which fit into the ways formed by the channel irons and thereby permit of the guiding of the racks as they are moved up or down.

Q is a cross rod, which extends through the side bars and pivot bearing of the upright, and holds such upright in the vertical position normally.

R are bracing rods, which extend from the rods P3 to and through brackets R on the front of the machine. The rods R are provided with suitable clamping nuts at each side of the brackets, whereby the position of the rods in the brackets may be adjusted.

S are bracing rods connected to the rods P2 at one end and at the opposite end threaded and 'extending through the bracket-s S and provided with suitable clamping nuts on each side of the bracket, whereby the rod may be adjusted. By the attachment of the rods R and S and the withdrawal of the cross bar or shaft Q the racks may be swung to any oblique position desired.

T are uprights supporting the hopper T and casing T2 at one end.

T3 is a belt, which extends through 'the casing underneath the hopper at one end and at the other end passes through a suitable place of deposit, which will be preferably at the far end of the drain or ditch, which is being dug, so that as the earth is being excavated from one end such excava` tion is passed to the far end of the ditch as will hereinafter appear.

U are bars provided with rack-shaped up` per ends with which mesh the pinions U', which are secured on a suitable cross shaft U2, which is provided with a crank U2 for a purpose which will hereinafter appear.

V is a cross shaft journaled in suitable bearings at the bottom of the bar U and carrying the sprockets V.

W is an inclined way extending from the bottom of the bars U to the front edge of the hopper T.

X are swinging braces rigidly secured to the bottom of the way lV and at the top hinged to the side bars of the truck. The braces X are provided with suitable turn buckles X', whereby they may be shortened or lengthened in order to allow of the way XV being raised or lowered with facility.

V2 is a cross shaft located at the top of the way XV being journaled in suitable brackets V5 secured to the top and carrying sprockets V4.

V5 are endless chains extending over the sprockets V and V4L and carrying the buckets V6.

It will be noticed on reference to the plan shown in Fig. 3, that the way W is wider than the width between the sprocket chains V5 and the buckets carried thereby leaving a space on each side of the sprockets.

Yrare scrapers attached toor secured to the bottom of thefway W and formed substantially in the shape of a mold board, so

as to direct the earth inwardly toward thel buckets. The bottom of the bars U are se` cured to the Scrapers Y as indicated.

, Y are clamping plates hinged at the bottom by the rods Y2 on to the bars U.

Y3 are uprights secured to the ways on each side of the endless bucket conveyers hereinbefo-re referred to and located in proximity thereto. i

Y4 is a toggle-jointed bar pivotally connectedat the top to the bar Y3 and to the plate Y.

Y5 isa wire` ropey connected to the center of the toggle jointed bars Y* and extending over a roller YG having a ratchet Y" attached to one end thereof with which engages a pawl Y2. A crank handle Y9 is provided at the opposite end of the roller YG and by means of this crank handle the rope Y may be pulled upwardly, so as' to straighten the toggle-jointed bar Y4 and thereby pre-ss the side plates Y as shown in Figs. 2 and 6 against each side of the excavation, and thus securely hold the machine down to its work during the period that the shovel is moving downwardly. The endless conveying buckets V5 are driven by means of a sprocket chain Z, which extends from a sprocket wheel Z on the shaftJ to a sprocket wheel on the shaft V2.

Having now described the principal parts involved in my invention I shall briefly describe its operation and utility.

The engine F during the operation of my machine is kept continuously running. By manipulating the lever 7 the worm I may be rotated, so as to move the truck either backwardly or forwardly upon the rails to the desired position. A hole is dug in the f ground to start my machine, such ,ho-le be* lng made of the desired depth and the clutch K is thrown into operation, so as to impart motion to the shaft M and consequently a downward movement ofthe racks N and shovel, thereby paring or digging oid' the front of the excavationvand depositing it at the bottom within the scrapers. The endless buckets being driven from the shaft continuously by the sprocketchain hereinbefore referred to the material collected by the scrapers is elevated into the hopper T and carried away to the opposite end of the ditch, drain `or excavation to fill it in. Of course, when t-he hole is first made it has to be thrown back of the end of the excavation until such excavation is long enough to receive it. When the shovel has reached the limit of its downward ktion of the shaft engages stroke the clutch K is reversely set and thereby the movement of the rack reversed. The sprocket chain4 F5 is always driving the sprocket wheel J and consequently the shaft J. The pinion J3 forming one porscribed with the spur wheel L. When the clutch K is set t-he central portion of the clutch'is thrown into the cone K3 and thereby connects the spur pinion J3 with the shaft J and thus drives the spur wheel L pinion L2 and gear wheel M2 and shrouded gears M5, thereby depressing the shovel at a slow speed. When, however, the clutch is operated, so as to throw the central portion into the cone K5 the pinion J3 then rotates loosely on the shaft and does not drive the spur wheel L, but the shaft drives directly the pinion J4, which meshes with the gear wheel M2 andv thereby causes such pinion tok move comparatively quickly and drive the shrouded gears M3 and racks with which they mesh also quickly in their upward ascent, thereby saving' much time in the operation of my machine.

IVhat I claim as my invention is:

l. In combination a truck, a shaft journaled therein, uprights having laterally extended portions pivotally supported on the shaft, bracing means connected to the uprights, kracks guided by said uprights, a shovel carried at t-he lower ends of the racks, gears o-n the shaft meshing with said racks, and means for operating the shaft, substantially as described.

2. The combination with the truck and upright suitably supported thereon having tongues on the inner sidesthereof, of the as hereinbefore derack consisting of the front toothed portion,

the central portions bolted thereto and the channel iron side portions as and for the purpose specified. l

3. The combination with the truck and upright suitably supported thereon having tongues on the inner sides thereof, of the rack consisting of the front toothed portion, the central portions bolted thereto and the channel iron side portions, the said central portions and channel iron side' portions being made in sections and breaking joint with each other and the shovel attached to the bottom of the racks as and for the purpose specified.

t. The combination with the uprights suitably supported and the racks and shovel connecting the bottom of the same, of a shaftv journaled in bearingsin the frame and provided with pinions meshing with the racks, gear wheels at the outer ends'of the shaft, a cross shaft provided with pinions meshing with the gear wheels aforesaid, algear wheel on the latter cross shaft, a supplemental cross shaft provided with a gear pinion meshing with the aforesaid gear wheel on the cross shaft and means for throwing the pinion into and out of gear with the gear wheel with which it meshes as and for the purpose specified.

5. The combination with the uprights suitably supported and the racks and shovel connecting the bottom of the same, of a shaft journaled in bearings in the frame and provided with pinions meshing with the racks, gear wheels at the outer ends of the shaft, a cross shaft provided with pinions meshing with the gear wheels aforesaid, a gear wheel on the latter cross shaft, a supplemental cross shaft provided with a gear pinion meshing with the aforesaid gear wheel on the cross shaft, means for throwing the pinion into and out of gear with the gear wheel with which it meshes, a sprocket wheel on the supplemental cross shaft and a sprocket pinion on the engine shaft, and a sprocket chain connecting the two sprockets as and for the purpose specified.

6. The combination with the uprights suitably supported and the racks and shovel connecting the bottom of the same, of a shaft journaled in bearings in the frame and provided with pinions meshing with the racks., gear wheels at the outer ends of the shaft, a cross shaft provided with pinions meshing with the gear wheels aforesaid, a gear wheel on the latter cross shaft, a supplemental cross shaft provided with a gear pinion meshing with the aforesaid gear wheel on the cross shaft, double cone frictions located on the supplemental shaft having the two internal frictions connected by a collar secured from rotating on the shaft, a forked lever extending into the collar, a lever extending to the front of the machine in proximity to where the attendant stands and suitably pivoted, and a rod connecting the latter lever with the aforesaid lever as and for the purpose specified.

7. The combination with the shovel and racks and guides therefor and means for manipulating the racks, of an inclined way adjustably connected to the truck and designed to extend normally in proximity to the path of the shovel, and means for raising the dug material on the inclined way as and for the purpose specified.

S. The combination with the shovel and racks and guides therefor and means for manipulating the racks, of an inclined way adjustably connected to the truck and designed to extend normally in proximity to the path of the shovel, means for raising the dug material on the inclined way and a hopper suitably supported in the frame and an endless belt extending outwardly from lthe hopper for conveying the earth away from the machine as and for the purpose specified.

9. In a device of the class described, the combination with the inclined way suitably supported on the truck and extending therethrough to the bottom of the ditch, of uprights connected to the bottom of the inclined way and provided with racks at the upper end, a cross shaft provided with a pinion meshing with the aforesaid racks and a crank handle for turning the cross shaft as and for the purpose specified.

10. The combination with the truck, shovel, racks and inclined way and the endless chain of buckets suitably supported in bearings on the inclined way and of a less width than the same, of the scrapers located at the bottom of the inclined way and secured thereto and of the full width of the inclined way at the front and converging to the width of the buckets next the way as and for the purpose specified.

11. The combination with the truck, shovel, racks and inclined way and the endless chain of buckets suitably supported in bearings on the inclined way and of a less width than the same, of the clamping plates suitably pivoted at the bottom of the inclined way, uprights secured to the inclined way in proximity to the endless chain of buckets, a toggle oint connecting the top of the upright to the clamping plates and means for straightening the joint, so as to cause the clamping plates to press against the side of the ditch as and for the purpose specified.

12. The combination with the truck, shovel, racks and inclined way and the endless chain of buckets suitably supported in bearings on the inclined way and of a less width than the same, of the clamping plates suitably pivoted at the bottom of the inclined way, uprights secured to the inclined way in proximity to the endless chain of buckets, a toggle joint connecting the top of the upright to the clamping plates, ropes connected to the center of the toggle, a drum around which such ropes extend provided with a ratchet and a crank handle and a ball meshing withl the ratchet wheel as and for the purpose specified.

J AMES PETER FARRELLY.

lVitnesses B. BOYD, R. GOBAIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents` Washington, D. C.

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