US1255600A - Feeding mechanism. - Google Patents

Description

B. M. W. HANSON.

, FEEDING MECHANISM.

APPLICATION man JUNE 4. 1914.

I 1,255,600. Patented Feb. 5,1918.

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. YVZZnesseafi Inventor? JM W /Z 777M, Wilma B. M. W. HANSON. FEEDING MECHANISM. KPPLICATION FILED .I UNE 4. 1914.

1,255,600. Patented Feb. 5,1918.

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FEEDING MECHANISM.

APPLICATION FILED JUNE 4. 1914.

1,255,600. Patented Feb. 5,1918.

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' specification.

Or1gina1 application filed January 30,

BENGT M. W. Hanson, OF HARTFORD, oonnnorrour, assienon r0 PRATT & WHITNEY COMPANY,

To all whom z'tmay concern:

Be it known that I, BENGT M. W. HAN- SON, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new; and useful Improvements in Feeding Mechanism, of which the following is a -This invention relates to a driving mechanism particularly adapted to be incorporated in or form part of a metal-working machine such as a grinding machine. One

of the primai y objects of the invention is,

to provide means of the character set forth which is simple in construction, effective in operation, and compact and by which a part can be operated either by power or by hand. This application constitutes a division of my application Serial No. 815,477, filed January 30th, 1914, upon which has been issued Patent No. 1,110,325 for metal workin machines, dated September 15th, 1914.

n the drawings accompanying and forming part of the present specification I have shown in .detail one of the several convenient forms of embodiment of the'invention, which to enable those skilled in the art to practise the same will be set forth fully in the following description. I do not limit myself to this disclosure, and I may depart therefrom in several respects withinthe scope of the invention defined by the claims following said description. Referring to the drawings:

Figure 1 is a front elevation'of the lower part of a metal-working machine provided with driving mechanism involving my invention, the boxing on the front of the framework and several of the parts inclosed thereby, being in vertical section.

Fig. 2 is a top plan view of another part of said machine showing other elements of the driving mechanism.

Fig. 3 is a transverse sectionv on the line 3-3 of Fig. 2.

Fig. 4 is a. vertical sectional side elevation of the upper part of the column of said machine, showing other parts. of the driving mechanism.

Fig. 5 is a detail view of gearing hereinafter more particularly described.

Like characters refer to like parts throughout the several views. A

A. driving mechanism involving my ima- Speci fication of Letters Patent.

0! HARTFORD, CQNNECTICUT, A CORPORATION OF NEW JERSEY.

FEEDING MECHANISM.

tion is shown embodied in a metal-working Patented Fee. 5, rate.

1914, Serial No. 815,477; Divided and this application filed June 4,

1914. Serial No. 842,885.

machine of a kind used for grinding. When 4 so employed the driving mechanism having primary and secondary operating means, may for instance be used for feeding the tool. I have used the words primary and secondary merely as a matter of convenience, the primary operating means being of power type, while the secondary operatin means is adapted to be actuated by hand. nterposed between theselprimary and secondary operating means and the part to be operated, are j instrumentalities whereby the said primary and secondary operating means can alternately be thrown into working relation With the part to be operated.

. Naturally the framing for supporting the difierent parts of the machine may be of any suitable nature. That I shown comprises a base or bed as 2 and a column as 3 rising therefrom. Supported by. suitable ways on the base or bed 2 is the traveling work supporting carriage or table 4 which is usually reciprocated by power, for example in the manner shown in my before mentioned Patent No. 1,110,325. Mounted in a boxing 5 on the front of the base or bed 2 is a rocker 6, the upper end of which extends through a slot 7 in the top of said boxing 5 in the path of dogs 8 and 9. As the table or bed 4 is reciprocated, the dogs 8 and 9 alternately engage the upper end of the rocker 6 and swing the same intennittentiy back and forth. The rocker 6 is provided with a segment '10 in mesh with a pinion 11. fastened to a shaft 12 to which is rigidly connected a crank arm 13. To the crank arm-is pivotedone end of a rod or link 14, the opposite end of which is loosely jointed as by apin and slot connection 15, with a rocker 16, all as in Fig. 1.

The rocker 16 is loosely mounted on a hollow zor tubular shaft 17 (Fig. 8) and it clearly shown not directly sustained by the bed as will hereinafter-appear, the shaft extending centrally through and being carried by'a gear directly supported by said bed. Mounted on the outer rejecting end of the hollow shaft 1? is e vs 20 to which is rigidly connected a ratchet wheeL 19. The ratchet wheel 19 is secured to the sleeve 20 by" means of a pin 21. This pin extends through slots 17, 17" in the shaft 17 and also extends through an aperture in a rod 22 which isslidably mounted within the shaft 17. It will, therefore, be clear that the ratchetwheel 19, sleeve 20, shaft 17 and rod 22 rota te together, but that the rod 22 together with the sleeve 20 and theratchet wheel 19 are longitudinally movable independently of the shaft 17-. Loosely carried by a sleeve 20 is an index wheel 23 adjacent to which is the carrier 24 for the guard 25 which guard pro ects across the peripheries of the index wheel 23 and the ratchet wheel 19. It will be noticed that the two parts 23 and 24 are adjustable around the sleeve 20 being held in their adjusted. positions by spring-shoes as 26 and 27 respectively as seen in'Fig. 3. Fastened to the sleeve 20 is a cap 84 which bears against the carrier 24. During the normal operation of the machine, that is in the present case during grinding, the rocker 16 is intermittently oscillated to thereby operate the ratchet wheel 19 step. by step and hence through the described parts effect the rotation of the shaft 17 which is adapted to be operatively connected as desired and as will hereinafter appear, with the tool 28 (Fig; 4). The length of stroke of the rocker 16 and thereby the degree of movement of the tool 28 when being operated by power, may be governed in any desirable manner, for instance, by means of an adjustable stop such as-a screw 29 tapped through a lug 30 (Fig; 1) on the front of the boxing 31 on a bed 2, this boxing inclosing certain gears as will hereinafter more particularly appear. On its backward movement the rocker 16 is adapted to abut against the upper end of the screw 29.

The purpose of the guard 25 is to stop the automatic or power feed when the tool 28 has completed a certain amount of advancing movement and this occurs when the guard 25 moves under the toothed end of the pawl and thus lifts the toothed end out of engagement with the ratchet wheel 19, it be ing understood that as the ratchet wheel 19. turns the guard 25 is carried therewith, owing to the fact that the carrier 24 for said guard rotates with the sleeve 20. The foregoing is description'of a step or intermittent feed mechanism which .is practically like that shown in Letters Patent No. 940,929 granted to me November 23, 1909, to which reference may be had and which has, h for been but briefly described. It constitutes one simple primary or power-operat- 111g means.

Supported by a suitable bearing on the front of the bed 2 (Figs. 2 and 3) is a manually-operable shaft 32, a hand wheel 33 being shown as a means for turning the shaft when occasion requires. The hand wheel pinning, to the inner end of the shaft 32 and incloscd in the boxing 31 is a pinion 34 (see also Fig. 35 supported by the shaft 36 mounted in said boxing 31; The idler 35 meshes in turn with a pinion or spur gear 37 fastened in some suitable way to the hollow shaft 17. The pinion 37 is in mesh with a spur gear. 38 suported by the hub of a pinion 39 sustained y a shaft 40 carried by the bed 2 and boxing 31, the two gears 38 and 39 being inclosed in said boxing and pinned together and to the shaft 40 to rotate as one. The pinion 39 is in mesh with a spur-gear 41, the hub 42 of-which is supported for rotation in an opening in the front of the bed 2 as shown best inFig. 3. The holldw shaft art. The shaft 43 has a sliding movement bracket 47 through a bearing 46 on 3. Fastened fastened suitably to the column.

5) in mesh with an idler .in some convenient manner to the shaft 43,

is a driver therefor which may as shown consist of a pulley 48 connected by a belt .as 49 with a suitable source of power to thereby rotate the shaft 43 and hence the grinding wheel 28. In the column 3 is a counterbalance weight 50 connected by a cord 51 or otherwise with the slide 45, the" cord 51 between'its ends passing over guide sheaves 52 and 53 mounted in the column 3 and bracket 47 respectively. Fastened suitably to the slide 45 is a support 54 to which a nut 55 is non-rotatively connected, said nut receiving a screw 56 vertically immov-- able and at the upper end of which a pinion 57 is fastened. This pinion 57 is connected by gears 58 and 59 with a driving gear 60 at an end of. the shaft 61 supported by suitable bearings. It will be clear that on the rotation ofthis shaft 61 the tool 28, through the described parts, can be raised or-lowered, depending upon the direction in which said shaft 61 is turned. The construction shown in Fig. 4 is a comparatively common one for effecting through the primary influence of other means, the advance or retraction of a tool or equivalent part and has, therefore, been but briefly described. Means of an entirely difi'erentcharacter might be substituted therefor. The shaft 61 is shownas having fastened to its lower end a bevel inion 62 .in mesh with a bevel gear 63 rigid with a shaft 64. The inner end of the shaft 64 is fitted in a tubular shaft 65 which receives within it the hollow shaft 17, the shafts 64: and 65 being connected for retation as by a pin 66.

Surrounding the inner end of the tubular shaft 65 and pinned or otherwise suitably connected therewith is a sleeve 67 which re-- ceives within it a clutch collar 68 loosely mounted on the shaft 17. The clutch collar 68 has teeth on its opposite sides to co-- supported by the rod 22 and acting as a convenient detent for such purpose. The pin 71 prevents in no wise the free rotation of the clutch member 68. Rigid with and extending from the clutch member 68 is a pin 73 which extends through an elongated slot 74. in the sleeve 67 and which also enters a hole 7 5 in a sleeve 7 6 slidable on the sleeve or member 67. For operating the sleeve 76 any desirable means may be provided, a yoke v 77 being shown for such purpose, the said yoke having studs 78 (see dotted lines Fig. 2) entering the peripheral groove 79 in the sleeve 76. The yoke 77 is fastened to a shaft 80 supported suitably within the bed 2 and provided with a crank arm 81 to the upper end of which a rod 82 is pivoted, said rod having fastened to its forward end a hand lever 83. It will be clear that, when the clutch collar 68 is shifted by means of the mechanism described, it carries with it the rod 22 and the parts carried thereby.

' The shaft 17 does not partake of such endwise movement.

and at the same time In Fig. 3 the clntch collar 68 is shown as being 1n engageme 1th the spur gear 41 pawl 18 is in posithe teeth. of the "store, when the tion to cotiperate wi ratchet wheel 19. Cl

rocker 16 (Fig. 1) is oscillated in the manner already described, the ratchet wheel 19 will be turned carrying with it-the shaft 17. As the shaft 17 rotates, it drives the pinion 37 thereby through the gears 38 and 39 rotating the gear 41. It will be noted a that the clutch collar 68 is in constant drivwill be understood that the gears 37, 38, 39

and 41 constitute a speed reducing train. It will be recalled that the driving connec tions just set forth are secured by the movement forward of the clutch collar 68 by a forward pull on the rod 82 (Fig. 2) under the primary influence of the lever 83 and intermediate connections between said rod and clutch member 68.

It is practically essential that when the' hand operable mechanism (utilized to rapidly shift the tool 28) is in action, the pawland-ratchet or equivalent mechanism to which I have referred should be out of action as otherwise the work might be ruined or the mechanism seriously injured. The disconnection of the power mechanism can best be effected by movingthe ratchetwheel 19 out of the range of action of the pawl 18 and at the same index wheel 23, which is peripherally plain, into the path of movement of the pawl.

time moving the This function is secured when the clutchcollar 68 is shifted to disengage it from the spur-gear 41 and to move it in engagement with the clutch member 69 on the shaft 17.

This is done by shifting the clutch collar 68 to the right in Fig. 3 through the primary influence of the hand lever 83 (Fig. 2). As the clutch collar 68 is thus moved the rod 22 is carried therewith as are also the sleeve 20 and cap 84-. so that the ratchet wheel 19 and index disk or 'wheel 23 are moved to the right. These parts are moved tlnrough a distance sufficient to carry the ratchet wheel outt ange of action of the pawl 18 and the i wheel 23 into a posi'' tioi; where it will 2 engaged by said pawl, thereby disconnec the powerfeed from the tool and at th, -mc time also throwing the pawl or ratcln intermittent primary operating mechan out of action. When the clutch collar 68 5 ages the clutch member 69, the hand op able mechanism ,involving the hand wheel 33 is put into operative or power transferring connection with the hollow shaft 65. When this relation exists-the drive will be as follows: hand wheel 33, shaft 32, pinion 34, pinion 35, pinion 37. shaft 17, clutch member 69, clutch collar 68, sleeve 67, shaft 65 and shaft 64 to the slide 45 in the manner already described. When the clutclnmembcrs 68 and 69 are in engagement the slide 45 can be quickly raised and lowered through the initial movement of the hand wheel 38 to effect the adjustment of the slide 15. and consequently of the tool 28 associated therewith.

What I claim is:

1. The combination of power-operable mechanism involving an intermittent feed device, hand-operable mechanism, a powertransmitting member, and means for connecting' the power-operable mechanism or the hand-operable mechanism with the power-transmitting member and for throwing the intermittent feed device out of action when the handpperable mechanism is in working relation with said power-transmitting member. i

2. The combination of power-operable -mechanism involving a pawl and a ratchet,

hand-operable mechanism, a power-transmitting member, and means for connecting the power-operable mechanism or the handoperable mechanism with said power-transmitting member and for disconnecting the pawl and ratchet from each other when the hand-operable mechanism is in working relation with the power-transmitting member.

3. The combination of power-operable mechanism involving an intermittent feed device and also involving a train of speedreducing gears, hand-operable mechanism, a power-transmitting member, and means for connecting the power-operable mechanism or the hand operable mechanism with the power-transmitting member and' for throwing the intermittent feed device out of action when the hand-operable mechanism is in working relation with the power-transmitting member.

4. The combination of'a shaft, a power operable member loose on said shaft, a second shaft, a sleeve rotative with the shaft, a clutch collar rotative with the first shaft, a second clutch member loose on the first shaft and shiftable alternately into operative relation'with the power operable member and with the aforesaid clutch member, the clutch collar having a constant driving connection with said sleeve, and hand operable means for rotating the first shaft.

5. The combination of a shaft, a power operable member loose on saidshaft, a second shaft, a sleeve rotative with the second shaft, a clutch member rotative with the first shaft, a clutch collar loose on the first shaft and shiftable alternately into operative relation with the power operable member and with the clutch member, the clutch collar having a constant driving connection with the sald sleeve, mechanism involving an intermittent feed device for turning said power operable member, means for throw mg the intermittent feed, device out of operative relation when the clutch collar is in engagement with the said clutch member,

' and means supplemental to the intermediate feed device for rotating said first shaft.

6. The combination of a power transmitting member, power operable mechanism involving an intermittent feed device, manually operable mechanism, and means for alternately clutching the power operable mechanismor the manually operable mechanism to the power-transmitting member,

and for throwing the intermittent feed device out of action when the manually operable mechanism is clutched to the power transmitting member.

mechanism into driving relation with the power-transmitting member and at the same time moving the ratchet out of the range .of action of its pawl and moving said disk intothe range of action of said pawl.

8. The combination of a shiftable clutch collar, power operable mechanism involving an intermittent feed device, manually operable mechanism, means for putting the power operable mechanism and manually operable mechanism alternately into working relation with said shiftable collar and for throwing the intermittent feed device out of action when the manually operable mechanism is in working relation with said shiftable collar. T

9. The combination of a shiftable clutch collar, power operable mechanism, manually operable mechanism, and means for alternately throwing the power'operable mechanism and the manually operable mechanism into working relation with said shiftable collar, and for throwing elements of the power operable mechanism out of working relation with each other when the manually operable mechanism is in working relation with said shiftable collar.

10. The combination of a hollow shaft, a.

power transferring member loose on said shaft, a second shaft, a sleeve rotative with the shaft, a second clutch collar rotative with the first shaft, a clutch member loose on the first shaft and shiftable alternately into operable relation with the power transferring member and with the clutch member, the clutch collar having a constant driving connection with the sleeve, mechanism involving an intermittent feed device for rotating said power transferring member, a rod inclosed by and longitudinally movable of the first mentioned shaft and extending from the clutch collar, means connected with the 'bar forthrowing ,the intermittent feed device out of operative relation when the clutch collar is in engagement with the clutch member, and means supplemental to the intermediate feed device for rotating said first mentioned shaft. H

In testimony whereof I afiix my signature in presence of two witnesses.

BENGT M. W. HANSON.

' Witnesses:

KATHRYN T. M. OCoNNELL, L. L. MARKED.

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