US1422531A - Automatic tool-dropping machine - Google Patents

Description

C. R. BOYCE. AUTOMATIC TOOL DROPPING MACHINE.

APPLICATION FILED MAY 18, I921.

Patented July 11, 1922.

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c. R. BOY-CE. AUTDMATICTOOL DROPPING MACHINE. x APPLIQATION FILED MAY 13, 1921. 1 422 53 1 V Patented July 11, 1922.

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Y Yr J5 m 4 4 v r 42 PATENT QFHQEH CARROL R. BOYCE, OF WAUTOMA, WISCONSIN.

Specification of Letters Patent.

AUTOMATIC TOOL-DROPPING MACHINE.

Patented July 11, 1922;

Application filed May 18, 1921. Serial No. 470,724.

T 0 all whom it may concern: a

Be it known that L-CARROL R. Boron, a citizen of the United States of'America, residing at Wautoma, in the county of Vvaushara and State of Wisconsim'have invented certain new and useful Improve.

ments in Automatic Tool-Dropping Machines, of which the following is a specification.

The primary object of the present inven-' tion is the provision of a strong machine adapted for dropping tools such as pounding weights or boring tools after elevating the same a proper distance, agreat saving in power being provided by my machine and the dropping operation being automatic during the continuous operation of the source of power.

A further object of the invention isthe provision of a machine after the nature of a pile driver adapted for elevating the weight with only a slight expenditure of power and automatically releasing the weight when reaching its highest elevated" companying drawings and in which like reference characters designate corresponding parts throughout the several views. i

In the drawings,

Figure 1 is a side elevation of the machine with the weight elevated,

Fi re 2 is a similar view thereof with the weight in its. lowered-position,

Figure 3 isa top plan view of Figure 1, I Figure 4 is a horizontal transverse sectional, view taken lon itudinally of i the power shaft shown in igure 3, with parts removed and broken away, a protecting casing for the spring of the clutch being also shown in section, j 1

Figures 5, 6 and 7 are vertical transverse mesh with a sectional ,views taken upon lines V-V, VI VI and VII-VII respectively. of Figure 4, and a Figure 8 is an end view of the elevating beam showing the pitman connection therefor. 7

Referring more in detail to the drawings, my invention being in the nature of a tooldropper may be arranged for elevating'and automatically dropping any desired number of weights or tools and one form of the invention is-herein fullyset forth embodying all of the principles thereof in a single unit or machine for elevating and dropping a single member such as the weight 10. A suitable base or frame 11 is provided for the machine herein illustrated rectangular in form, for resting upon the ground and constituting a support for the operating mechanism as well as the cornerfpost 12, having a pulley 13 adjacent its upper end and? over which the hoisting cable 1 1 of the weight 10 passes. v

'A- driving shaft 15 is journaled transversely of the frame 11 adjacent the opposite end thereof from the post, 12 and has a power pulley 16 for turning by any suitable source of supply, which is unnecessary to herein illustrate. Y

A power shaft 17 is journaled transversely ofthe frame 11 forwardly of the driving shaft 15, and is provided with a. gear 18 freely mounted upon the power shaft 17, by a hub 19, while the gear 18 is in constant pinion 20 secured to the drivingsbaft 15. a

An elevatingbeam 21 for the cable 14 is pivoted at its lower end upon a stub shaft 22 projecting from the enlargedlower end or base- 23 of the .post 12. The cable 14 after passing from the weight 10 over the elevated pulley 13 passes over the sheave 24 journaled upon a shaft 25 adjustably carried by the bifurcated free end portion 26 of the beam 21, a plurality of perforations 27 being provided for the adjustable positioning. of said shaft 25 The lower end portions 28 of the beam 21 is bifurcated for the reception of a third pulley; 29 journaled upon stub shaft 22 and over which the cable ll passes from the intermediate pulley 24:, the adjacent end of the cable 1 1 being an chored upon a spindle 3O projecting from the base 23' and having a squared end 31 adapted for the detachable connection of a crank handle such as illustrated by dotted lines at 32 in Figure 1- of. the drawings;

A crank 33 fixed to one end of the power shaft 17 is pivotally connected to the beam 21 by a pitman 34 having one end thereof pivoted as at to the crank 33 and its upon the sleeve 41. The spring 42 normally maintainsthecluteh members 37 and 38 in operative engagement, the clutch be ng adapted for manual release by a suitable clutch lever 45 bearingagainst the oppositeside of the shoulder 43 from the spring 42.

Atubular casing 46 is preferably provided around the spring 42 for overlying the slots and p1'oje ctions39' and and preferably secured to the shoulder 43. A sleeve 47 is secured to the shaft 17 and is mounted within a socket 48 of the hub 19 and a similar socket 49 of the clutch member 38' for preventingmovement of the hub 19 longitudinally of the power shaft 17. A transverse pin 50 carried by the shaft 17 is positioned in the opposite longitudinal interior grooves 51 of the clutch member 38 which project inwardly of the clutch member 38 from the socket 49thereof. Thepin 50 prevents rotation of the clutch member 38 relatively of the power shaft 17, and taken with the dove-tailed connection of said clutch member 3 8 with the sleeve 4l,jthet-u-rning of the gear 18 in the direction inclicated by the arrow in Fig. 2 of the drawingyeffects the rotation of the power shaft 17 with its crank 33 when the clutch members 37 and 38 arein engagement with each other as normally mantained. by the spring '42.

' With theweight 10 in its lowered position as illustrated in Fig. 2, the turning of the gear 18 by the pinion 2O pulls the pitman 34 the'rehy's'wing-ing the beam to its lowermost position and elevating the weight 10 as llltistfated inFig. 1. After the crank 33 passes the' longitjudinal' line of center of the. pit'ma'n34; the weight 10 exerts a forward pultupen the pitman and crank thereby trrr'nlng the crank 3'3 and the clutch member 38 atagreater rate of speed than the gear and clutch member '37 permitting. the clutch mei'nher '38 to ratchet over the "clutch member 37 while the weight 10 drops and the beam 21 returns to the position shown in'Fig. 2. It will beseen that the continued rotation of the gear 18 at a uniform speed successively elevates the weight 10 which is automatically released by the clutch members 37 and 38 for dropping for use in driving pipe, piling or other objects. It will be obvious that a drilling tool may be employed instead 'ofthe weight 10 while the operative position of the tool or weight is regulated by turning the shaft 30. V a

Not only is the length of thecable 14 adjusted as desired, by'meansof the shaft 30fo'r the regular operation of the machine but the shaft 30 may also be employed for elevatingthe tool, or weight attached to the cable from any lowered position such as a upon the crank 33 consisting ofan arm 52 having a weight 53 at one end and pivoted to the crank 33 at'its opposite end 54. A strap 55 limits the swinging movement of the arm '52fand"just-preceding the instant that both the crank 33 and pitman 34 reach like positions as shown in "Figure 1, the weight 53" swings the arm 52 against the inner end of the crank 33, as shown in Figure 1 giving a; sudden forward impulse to the crank 33 causing-a quicker release of the clutch 3T and'38a1id more quickly bringing the we'ight 10 to its dropping position for automatic release and operation .The complete operation 'of thed'evice will be apparent from this detailed description thereof and whilelthe form herein's et forth isbe lieved preferable, it willbe understood that changes may be ma'de'therein without de parting from thespirit and scope of my invention. i a

What I claim as new and desire tofsecure by Letters Patent, is i 1., A tool-elevating machine comprising an inclined beam. mounted for oscillations, a cable adj ustablylattached' to the be'am,fa tool secured to the; free endof the cable, a power shaft,'a cranklupon said shaft, pitman connectionsbetvveen saidsha'ft and beam, prop'elling gear'upon saidishaft, clutch members between 'saidshaft and gear adapted for antomatic'release-when the tool is at itsmo'st elevated position, manual releasing means for a chitch; 'a-djusta'ble winding means for the cable and an accelerating means for the crank carried by the crank adjacent the power shaft.

2. A device of the class described comprising a base, a beam pivoted at its lower end to the base with a bifurcated free end portion provided with transverse perforations, a shaft adjustably positioned through one pair of said perforations, a sheave journaled upon said shaft between the bifurcations of the beam, a pulley journaled at the pivoted end of the beam, a post carried by the base, a pulley adjacent the top of the post, an elevating cable running over said pulleys with an intermediate portion positioned over said sheave, a spindle to which the cable is anchored adapted for rotation during the winding of the cable thereon, a tool upon the free end of the cable, a power shaft carried by the base, a clutch member adjustably attached to said shaft, a crank secured to the shaft, a pitman pivotally connected between the free end of said crank and said shaft upon the beam, and a propelling gear journaled upon said power shaft normally operatively connected to said clutch member and adapted for automatic release when the tool is elevated.

3. A device of the class described comprising a base, a beam pivoted at its lower end to the base with a bifurcated free end por- 7 tion provided with transverse perforations,

a shaft adjustably positioned through one pair of said perforations, a sheave journaled upon said shaft between the bifurcations of the beam, a pulley journaled at the pivoted end of the beam, a post carried by the base, a pulley adjacent the top of the post, an elevating cable running over said pulleys with an intermediate portion positioned over said sheave, a spindle to which the cable is anchored adapted for rotation during the winding of the cable thereon, a. tool upon the free end of the cable, a power shaft carried by the base, a clutch member adjustably attached to said shaft, a crank secured to the shaft, a pitman pivot ally connected between the free end of said crank and said shaft upon the beam, a propelling gear journalled upon said power shaft normally operatively connected to said clutch member and adapted for automatic release when the tool is elevated, an accelerating means upon the crank adjacent the power shaft comprising an arm pivoted to the crank, a weight at the free end of the arm extending beyond the end of the crank and a limiting strap for the arm carried by the crank.

4L. In a device of the class described, a power shaft, a gear having a hub journaled thereon and provided with clutch teeth at one end of the hub with a recess in the hub surrounding the shaft adjacent said teeth, a sleeve within said recess fixed to the shaft adapted for preventing longitudinal move ment of the gear, a clutch member longitudinally slidable upon the shaft having teeth adapted to cooperate with the adjacent end of the hub and having an inwardly projecting recess adapted for overlying said sleeve when the clutch is in its engaging position, the said clutch member having inwardly extending opposite grooves, adjacent the shaft, a transverse pin through the shaft projecting into said grooves, a sleeve secured to the opposite end portion of the shaft from said gear having projections extending toward the gear, said clutch member having slots in which said projections are normally positioned whereby longitudinal movement of the clutch member is permitted but rotate relatively of the power shaft is prevented and a spring tensioned between said last named sleeve and clutch member whereby the clutch is normally closed during operation.

In testimony whereof I afiix my signature.

CARROL R. BOYCE.

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