US1049389A - Double-acting ratchet mechanism. - Google Patents

Description

B. H. PAUGH. DOUBLE ACTING RATGHET MECHANISM.

APPLICATION FILED DEG.13. 1911.

Patented J an. 7, 1913.

Inventor Attorneys 'ASSIGNOR OF ONE-HALF T DOUBLE.ACTING RATGHET MECHANISM.

Specification of Letters Patent.

Patented J an. 7, 1913.

' Application filed December 13, 1911. SerialNo. 665,514.

To all whom it may concern;

Be it known that I, BENJAMIN H. PAUGH, a citizen of the United States, residing at Parsons, in the countyof Tucker and State of West Virginia, haveinvented a new and useful Double- Acting Ratchet Mechanism, of which the following is a specification. The present invention relates to improve ments in double acting ratchet mechanisms, the primary object of the invention being the provision of a double acting ratchet mechanism for driving drills, bits or other rotary tools, wherein a frame has mounted thereon a' handle capable of an oscillatory movement in combination with a rotary shaft and operably connected with said handle whereby the movement of the handle in one direction will impart the same rotation to the shaft as when moved in the opposite direction, one end ofthe rotary shaft being provided with a tool receptacle while the other end carries a feed screw mechanism adapted to remain stationary'du'ring the r0 tation of the main shaft of the ratchet mechanism so as to impart the desired feeding movement to the tool. V

A further object of the present invention is a pawl and ratchet controlled mechanism,

for locking a feed screw to a double acting rotary ratchet operated mechanism so that a longitudinal 'movement may be imparted thereto, whereby the ratchet mechanism may be rotated without having such longitudinal movement imparted.

View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and inthe With the foregoing and other objects in details of construction hereinafter described and claimed, it being understood that changes in, the precise embodiment of in vention herein disclosed can be made within the scope of what is claimed without departing from the spiritof the invention.

In the drawings Figure 1 is an elevation of the complete mechanism taken from the handle side thereof, the handle being broken away above the yoke end thereof. Fig. 2 is a side elevation taken from the right of 1 the yoke of the handle being broken away. Fig. 3 is a section taken on line 8-3 of Fig. 2. Fig. 4 is a section taken on line 4:-4: of Fig. 2, dot-and-dash lines illustrating the cam in the position for throwing the pawl out of locking engagement with the toothed ratchet.

In the drawings, the numeral 1 designates the main frame of themechanism which has rotatably mounted therein the tubular standard or shaft 2, havingupon its lower end the annular rim or collar 3 for the reception of the lower bevel pinion 4 which is keyed at 5 to the lower end of the said tubular shaft 2 so as to be rotatable therewith. The re duced bore 6 in the rotatable end of the shaft 2 provides a tool receptacle, whereby a bit or drill or in fact anyobject that is adapted to be rotated by the mechanism is operably connected to the said shaft 2:

In order to hold the shaft 2 relatively within the frame 1 and to coac't with the upper face of the bevel pinion 4 in retaining TS PATEN '1 FlGE. i

BENJAMIN H. raven, or PARSONS, wnsr VIRGINIA,

the said shaft 2 in proper relation with the frame 1, a locking ring or collar 7 is secured upon the said shaft 2. Secured exteriorly near the upper end of the shaft 2 is a locking or retaining ring or collar 8 which forms a lower limiting means for the eccentric or cam 9, which is rotatably mounted upon the upper extreme endofthe collar shaft 2, the purpose of which will presently appear.

Mounted within the upper end of the shaft 2 and rotatable therewith isthe re- 1.

dnced end 10 of the ratchet wheel 14, a feed screw 11 being mounted in the threaded bore of thesame and projected within the hollow shaft 2, as clearly shown, and also without and above the ratchet 14 carrying at its top an object engaging cleator point 12 which is adapted to enter a stationary object such as indicated in dotted lines and as 13, whereby the shaft 2 may be rotated as the screw 11 remains in a stationary position.

In order to arrest the shaft against a retrograde movement during the rotation thereof and consequently lock the. feed screw 11, a pawl 15 is pivoted on a sliding casing 16 upon the upper end of an arm 17 which is connected to the base 1 of the machine. In this box 16 is mounted a stud'18 which is secured to thearm 17 and has connected thereto a pin 19, which is also slidably mounted in the lug 21 of the casing .16 so that the spring 20 will exert a tension to normally hold the pawl 15 in engagement with the teeth of the ratchet 14, a spring 22 being carried by the casing 16 and engaging the pawl 15 to hold the same toward the 9 is rotated from the position as shown in Fig. 4 to the dot-and-dash line position therein so that the inner face 23 ofthe casing 16 is engaged by the cam and pushed outwardly to its fullest extent so as to disengage the pawl 15 from the teeth of the ratchet 1 1 and permit it to have its free end held as shown in dot-and-dash lines, Fig. 4, bymeans of the pin 15.

Formed integral with the base 1 of the machine and projecting from opposite sides thereof are the trunnions 24 and 25, which have rotatably mounted thereupon the bevel pinions 26 and 27- which are in mesh at all times with the main drive bevel pinion 4, and mounted for oscillation upon the eX- treme ends of the trunnions 24 and 25 are the plates 28and 29 which are connected by the securing screws 6 to the lower ends of the forks of the operating handle 31.

i In order to impart the desired rotation to the respective bevel pinions 26 and 27 ratchet wheels 32 and 33 are formedintegral with the respective pinions 26 and 27, and mounted within the sockets 34and' 35 of the respective terminals of the forks 30 of'the operating lever are the spring actuated detents or pawls 36 and 37 ,'whose engaging ends are in operable relation to the teeth of the respective ratchets 32 and 33, the ratchet 33 being operated when the lever 31 is moved away from the shaft 2, while the ratchet 33 is operated when the lever '31 is moved toward the shaft 2, both of said ratchets moving in the direction of the arrow Fig. 1 was to impart the Same rotation to the bevel pinion 4: and tubular shaft 2 as indicated by the arrow below the pnion 4 in Fig. 1.

' From the foregoing description taken in connection with'the drawings, it is evident that when it is desired to drive any form of tool, such for instance as a drill, that the drill is placed within the bore 6 of the tubular'shaft' or main drive 2, while the pointed end 12 is placed against any rigid support, the drill being placed in position for drilling the desired object. The'cam 9 is now moved 1n the position as shown in Fig. 1 so that the pawl 15 is thrown in engagement with the ratchet 14. By the oscillation or reciprocation of the lever 31, the pinion 4: will be operated in the direction of the arrow Fig. 1 and impart such movement to the shaft 2 andrto the drill carried thereby, so as to rotate the drill in the desired cutting direction and at the same time rotate the ratchet 14 andas the feed screw 11 is held 7 rigid through its: point 12, the saidratchet will be fed downwardly carrying with it the entire sleeve and the drill, so that the drill will be fed longitudinally during the rota trunnions,

tion thereof to produce the desired cut or bore to the object being operated upon.

It is evident from the construction herein set forth, that the entire mechanism is assembled. upon the shaft 2 from the upper end thereof, a bevel pinion 4: being first placed in position and keyed above the shoulder 3 while the frame 1 is slipped upon the shaft 2- and is held in place thereupon by means of the retaining ring or collar 7 after which the retaining sleeve 8 is secured to the top of the shaft 2 to allow proper positioning ofthe cam or eccentric 9 after which the ratchet 14 15 keyed within the upper end of the shaft 2 and finally the feed screw 11 is placed within the threaded bore of the ratchet 14.

By reason of the base 1 being provided with the large trunnions 24: and 25, in combination with the other features, a mechanism of. this character can be made very strong, simple and durable and may be used in connection with lathes or other work whereit is desired to impart a rotary movement to a tool through a reciprocatory or oscillatory actuating mechanism.

What is claimedisz 1. A double acting ratchet mechanism, having a frame with oppositely disposed trunnions, two ratchet gears rotatably mounted upon, said trunnions, a hollow shaft rotatably mounted in said frame and having a gearmeshing with said first two gears, a manually. controlled oscillatory lever operably connected to the frame and saidra'tchet gears for rotating said shaft, a ratchet wheel carried by and rotatable with the shaft at the opposite end to the gear, a feed screw disposed concentrically of the ratchet wheel and having means to enc s a stationary object whereby the rotation .of the ratche'rrwill impart a longitudinal movement to the screw, and a pawl engaging the ratchet wheel to prevent a retrograde movement thereof. 7

V 2. A double acting ratchet mechanism, having a frame with oppositely disposed two ratchet gears rotatably mounted upon said trunnions, a hollow shaft rotatably mounted in the frame and having a gear meshing with said first two gears, a manually controlled oscillatory lever 0perably connected to the frame and said ratchet gears for rotating said shaft, a ratchet wheel carried by and rotatable with the shaft at the opposite. end to the gear, a feed screw disposed concentrically of the ratchet wheel and having means to engage a stationary object whereby the rotation of the ratchet will impart a longitudinal movement to the screw, a spring actuated casing normally held toward the ratchet, a pawl to actuate the frame to move the pawl into and out of engagement with the ratchet.

3. A double acting ratchet mechanism, having a frame, a tubular shaft rotatably mounted therein, mechanism operably connected to the lower end of said shaft for imparting a rotation to said shaft, a ratchet wheel mounted in the upper end of said shaft and provided with a concentrically threaded opening therein, a feed screw mounted in said concentrically threaded opening of the ratchet wheel, and movable into and out of the hollow shaft, means carried upon the upper end of said screw to engage a stationary object, whereby the rotation of the shaft will impart a longitudinal movement to the screw, a pawl engaging the ratchet wheel to prevent a retrograde movement thereof, and means for moving the pawl outwardly to disengage the same from the ratchet.

4;. A double acting ratchet mechanism, having a frame, a tubular shaft rotatably mounted therein, mechanism operably connected to the lower end of said shaft for imparting a rotation to said shaft, a ratchet wheel mounted in the upper end of said shaft and provided with a concentrically threaded opening therein, a feed screw mounted in said concentrically threaded opening of the ratchet wheel and movable into and out of the hollow shaft, means carried upon the upper end of said feed screw to engage a stationary object whereby rotation of the shaft will impart a longitudinal movement to the screw, a spring actuated casing mounted adjacent to the ratchet wheel and normally held toward the same,

a spring pawl mounted in said casing and normally in the path to engage with the ratchet to prevent a retrograde movement thereof, and a cam mounted upon the shaft and disposed to actuate the casing to move the casing and the pawl, to release the pawl from the ratchet.

5. A double acting ratchet mechanism, having a frame with oppositely disposed trunnions and having a vertical bore, a tubular shaft rotatably mounted in said vertioal bore and projecting through the frame, a gear carried upon and rotatable with the lowerend of said shaft, a concentrically disposed feed screw mounted in the upper end of said shaft, means carried upon the upper end of said feed screw to engage a stationary object whereby the rotation of the shaft will impart a longitudinal movement to said feed screw, two rotatable gears, one upon each trunnion of the frame, in mesh with the gear of the tubular shaft, a ratchet wheel to each gear, each of which are arranged in opposite relation to each other, a handle provided with a yoke terminal straddling said gears and ratchet and mounted for oscillation upon the ends of the trunnions of the frame, and a spring actuated detent carried by each terminal of the yoke and disposed in operable relation with its respective ratchet.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

BENJAMIN H. PAUGH.

Witnesses:

A. V. DANIELSEN, E. A. HAYs.

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

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