US800428A - Reversing mechanism for machine-tools. - Google Patents

Reversing mechanism for machine-tools. Download PDF

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US800428A
US800428A US23936505A US1905239365A US800428A US 800428 A US800428 A US 800428A US 23936505 A US23936505 A US 23936505A US 1905239365 A US1905239365 A US 1905239365A US 800428 A US800428 A US 800428A
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frame
shafts
shaft
machine
pulley
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US23936505A
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Francis B Cockburn
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion

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  • PATENTED SEPT PATENTED SEPT. '26, 1905.
  • FRANCIS B OOCKBURN, O RLDGW Y, PENNSYLVANIA.
  • Figure 1 is an end elevation illustrating my improved reversing mechanism as embodied in a planer.
  • Fig. 2 is a front elevation of the same.
  • Fig. 3 is a plan of the same, and
  • Fig. 4 is a diagrammatic view illustrating a modification of the means for driving the mechanism.
  • a represents the bed of the machine to be operated, which I have conveniently illustrated as the bed of a planer.
  • t represents a standard secured in the bed a, and c a bracket which is supported by the standard I).
  • the bracket 0 is provided with upright23-in which a rocking frame at is pivotally mounted upon suitable short shafts d, secured in the upper ends of the uprights 2.
  • Shafts e f are journaled in the frame (1, and on one end of the shaft ,6 a gear 3 is secured and on the corresponding end of the shaftf a gear 4 is secured, said gears 3 and 4 meshing with one another and are, moreover, adapted to be changeable for the urpose of varying the relative speeds ofpulleys g and it.
  • ' 8 is a drive-shaft for the planer, and 9 a suitable yoke secured to the base a and in which at one end the shaft 8 is j ournaled.
  • this piston may be operated manually or automatically by the operation of the machine.
  • this automatic operation may be effected through the arm 13, connected to the valvestem of the cylinder m, a link 14 connecting the arm 13 with an arm 15, which latter is connected to a rod 16, journaled in suitable bearings secured to the side of the standard I), an arm 17, connected to the rod 16, and a rod 18, connecting the arm 17 with an arm 19, which latter is secured to' a dog n, pivotally connected to the base of the machine at.20 and provided with lugs 21 22, the lug 21 being so placed as to contact with an adjustable block 23 and the lug 22 with an adjustable block 24, which blocks may be caused to travel with the frame of the machine and by which it is believed it will be apparent that cured to the frame (1 in a depen 26, mounted on a suitable shaft 27, fixed in the bracket 0;
  • weight 29 ;by means of which, acting through An arm 28 is fixed to the pin-. ion 26, and at the end of the arm 28 is a 7 5 m represents a cylinder, which is convenpriselugs on opposite sides of one or both of the uprights 2 of the bracket 0, and which lugs are provided with suitable screws, whose position may be varied at will 'to limit the rockingmovement of the said pivotedframe.
  • valve-stem of the cylinder is turned, whichin the first instance may be done manually orat' all times, if'so desired, the piston will be actuate'd to rocktlie frame d in one direction or'the otherto tighten one or the other of said belts to drive the machine in the desired direction, depending of course upon the direction in which the piston was moved and the direction of rotation of the intermediateshaft 7, After starting the made automatically by the automatic control of the valve-stem throu h the arms, rods, dogs, and stops, as herein efore described, or manually. Itwill also be apparent with reference to Fig.
  • the drive may be effected fromtheshaft 32 and suitable pulley and belt, the shaft 32 be ing placed in the same horizontal lane with the shafts e and f and'thepivota shaftsd when these latter shafts are in-their central or horizontal'position, thus dispensing with the gears 5 andG-andthe shafts 7;
  • a support In a reversmgmechanismfor machinetools and the like, and in combination, a support,. a frame pivotally mounted therein, shafts journaled in said frame, a pulley mounted on each of said shafts, means for turning said shafts in opposite directions, a drive-shaft for the machine to be operated, a pulley thereon, belts passing around the last aforesaid pulley and respectively around the pulleys mounted in said frame, means for rocking said frame in one direction or the other to tighten one or the other of said belts, means for automatically operating the last-aforesaid means, and means for automatically returning and maintaining said frame normally in a horizontal position when inoperative.
  • chine the reversals may, asillustrated, be:
  • a support In a reversing mechanism for machinetoolsand the like, and in combination, a support, a frame pivotally mounted therein, shafts ournaled in said frame, a pulley mounted on each of said shafts, means for turning said shafts 1n opposite dlrections, a
  • a support a frame ivotally mounted therein, shafts journaled in said frame, a pulley mounted on each of said shafts, a gear on the endof one of said shafts, a gear on the corresponding end of the other of said shafts,
  • a sup port a frame ivotally mounted therein, shafts journaled in said frame, a pulley mounted on each of said shafts, a gear onthe end of one of said shafts, a gear on the corresponding end of the other of said shafts, said gears meshing with one another, means for turning one of said shafts whereby the other of'said shafts turns in the'opposite direction through said gears, a drive-shaft for the machine to be operated, a pulley thereon, belts passing around the last-aforesaid pulley and sai frame, a cylinder, a piston therein, a piston-rod therefor, a connection between the said piston-rod-and the said frame, means for automatically controlling the operation of said piston to determine the direction in which the said frame is to be rocked, and adjustable stops placed on both sides of said support for imiting the rocking movement of said frame.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Description

PATENTED SEPT. '26, 1905.
RB. GOOKBURN. v REVERSING MEGHANISM FOR MACHINE TOOLS.
APPLICATION FILED JAN. 3. 1905.
UNITED STATES oFFioE.
FRANCIS B. OOCKBURN, O RLDGW Y, PENNSYLVANIA.
REVERSING MECHANISM FOR MACHINE-TOOLS.
To all whom it may concern.-
Be it known that I, FRANors B. CocKBURN, a subject of the King of England, residing at Ridgway, in the county of Elk and State of Pennsylvania, have invented Improvements in Reversing Mechanism for Machine-Tools,
. of which the following is a specification.
shaftsjournaled in said frame, a pulley on; each of said shafts, means for turning said shafts in opposite directions, a drive-shaft for the machine to be operated, a ulley on the drive-shaft, belts passing around the lastaforesaid pulley and respectively around the pulleys mounted in sa1d frame, means for rocking said frame in one direction or the other to tighten one or'the other of said belts, means for automatically operating the aforesaid means, means for returning and maintaining said frame in a normal central position, and means for limitin the rocking movement of said frame, all 0 which will be hereinafter more particularly described.
In the drawings, Figure 1 is an end elevation illustrating my improved reversing mechanism as embodied in a planer. Fig. 2 is a front elevation of the same. Fig. 3 is a plan of the same, and Fig. 4 is a diagrammatic view illustrating a modification of the means for driving the mechanism.
a represents the bed of the machine to be operated, which I have conveniently illustrated as the bed of a planer.
t represents a standard secured in the bed a, and c a bracket which is supported by the standard I). The bracket 0 is provided with upright23-in which a rocking frame at is pivotally mounted upon suitable short shafts d, secured in the upper ends of the uprights 2. Shafts e f are journaled in the frame (1, and on one end of the shaft ,6 a gear 3 is secured and on the corresponding end of the shaftf a gear 4 is secured, said gears 3 and 4 meshing with one another and are, moreover, adapted to be changeable for the urpose of varying the relative speeds ofpulleys g and it. On
the opposite. end of the shaft 6 a gear 5,
Specification of Letters Patent. application filed January 3, 1965- Serial No. 239,365-
Patented. Sept. 26, 1905.
one end of which is preferably j ournaled in the same bearing as the inner shaft (1, and this shaft 7 (which may be termed an intermediate shaft) is connected to the power-shaft directly or by means of a belt and pulley, as may be found expedient. Gears 3 and 4 are omitted from Fig. 2 in order to more clearly illustrate the other arts.
9 represents a pulley which is mounted on the shaft 6, and h a similar pulley, which is mounted on'the shaft 1 meshing with the gear 6, secured on a shaft 7,
' 8 is a drive-shaft for the planer, and 9 a suitable yoke secured to the base a and in which at one end the shaft 8 is j ournaled.
i represents a pulley mounted on the shaft 8, an 7c Z are belts which pass around. the
pulley '11 and respectively around the pulleys g and h.
rection or the other to tighten either the belt lor the belt 7c, and this piston may be operated manually or automatically by the operation of the machine. In the present case this automatic operation may be effected through the arm 13, connected to the valvestem of the cylinder m, a link 14 connecting the arm 13 with an arm 15, which latter is connected to a rod 16, journaled in suitable bearings secured to the side of the standard I), an arm 17, connected to the rod 16, and a rod 18, connecting the arm 17 with an arm 19, which latter is secured to' a dog n, pivotally connected to the base of the machine at.20 and provided with lugs 21 22, the lug 21 being so placed as to contact with an adjustable block 23 and the lug 22 with an adjustable block 24, which blocks may be caused to travel with the frame of the machine and by which it is believed it will be apparent that cured to the frame (1 in a depen 26, mounted on a suitable shaft 27, fixed in the bracket 0;
weight 29;;by means of which, acting through An arm 28 is fixed to the pin-. ion 26, and at the end of the arm 28 is a 7 5 m represents a cylinder, which is convenpriselugs on opposite sides of one or both of the uprights 2 of the bracket 0, and which lugs are provided with suitable screws, whose position may be varied at will 'to limit the rockingmovement of the said pivotedframe.
In the initial ornormal condition ofinaction, as shown inthe drawings, the frame (Z is so maintained by means'of the weight 29,
rack 25, and pinion 26"that'the shafts e and are substantially horizontal, and when the intermediate shaft 7 is turned the shaft 6 will be turned in one direction through the gears 5 and6' and'that the shaftf will'be turned'in the'opposite directionthrou h the gears 3 and 4, and in this position neit er-of the belts is sufliciently tautto drive the machine. If now the valve-stem of the cylinder is turned, whichin the first instance may be done manually orat' all times, if'so desired, the piston will be actuate'd to rocktlie frame d in one direction or'the otherto tighten one or the other of said belts to drive the machine in the desired direction, depending of course upon the direction in which the piston was moved and the direction of rotation of the intermediateshaft 7, After starting the mamade automatically by the automatic control of the valve-stem throu h the arms, rods, dogs, and stops, as herein efore described, or manually. Itwill also be apparent with reference to Fig. 4 that'should itbe inconvenient to drivethe mechanism'by an'intermediate shaft which is inalinementwith" the shafts upon whichthe frame I) is pivotally mounted the drive may be effected fromtheshaft 32 and suitable pulley and belt, the shaft 32 be ing placed in the same horizontal lane with the shafts e and f and'thepivota shaftsd when these latter shafts are in-their central or horizontal'position, thus dispensing with the gears 5 andG-andthe shafts 7;
I claim as my invention 1; In a reversing mechanism for machineport, aframe pivotally mounted therein, shafts journaled inrsaid frame, a pulley mounted on each of said shafts, means for turning saidshafts in opposite directions, a
drive-shaft for the'machine to be-operated,
ulleys thereon, belts passing around theast-aforesaid pulleys and respectively around the pulleys mounted in said *frame, means for rocking said frame in one direction or the other to tighten one or'the other of said belts, and means for automatically returning and'normally maintainingsaid'frame in a horizontal position when inoperative.
2. In a reversmgmechanismfor machinetools and the like, and in combination, a support,. a frame pivotally mounted therein, shafts journaled in said frame, a pulley mounted on each of said shafts, means for turning said shafts in opposite directions, a drive-shaft for the machine to be operated, a pulley thereon, belts passing around the last aforesaid pulley and respectively around the pulleys mounted in said frame, means for rocking said frame in one direction or the other to tighten one or the other of said belts, means for automatically operating the last-aforesaid means, and means for automatically returning and maintaining said frame normally in a horizontal position when inoperative.
3. In a reversing mechanism for machinetools and the like, and in combination, a suport a frame )ivotall mounted therein,
shafts journaled in said frame, a pulley mounted on each of said shafts, means for turning sa1d shafts in opposite directions, a
drive-shaft for the machine to be operated,
other to tighten one or the other of said helts, means for automatically returning and maintaining said frame normally in positlon when inoperative, and means for limiting the rocking movement of said frame. chine the reversals may, asillustrated, be:
4. In a reversing mechanism for machinetoolsand the like, and in combination, a support, a frame pivotally mounted therein, shafts ournaled in said frame, a pulley mounted on each of said shafts, means for turning said shafts 1n opposite dlrections, a
'drive-shaftfor the machine to be operated,
a pulley thereon, belts passing around the last-aforesaid pulley and respectively around the pulleys mounted in said frame, means for rocking said frame in one direction or the other to tighten one or the other of said .ing movement of said frame. tools and the like, and in'combma-tlon; asup- 5. In a reversing mechanism for machinef tools and the like and in combination, a support, a frame ivotally mounted therein, shafts journaled in said frame, a pulley mounted on each of said shafts, a gear on the endof one of said shafts, a gear on the corresponding end of the other of said shafts,
andrespectively around the pulleys mounted in said frame, a cylinder, a piston therein, a
. when inoperative.
6. In a reversing mechanism for machinetools and the like, and in combination, a sup port, a frame ivotally mounted therein, shafts journaled in said frame, a pulley mounted on each of said shafts, a gear onthe end of one of said shafts, a gear on the corresponding end of the other of said shafts, said gears meshing with one another, means for turning one of said shafts whereby the other of'said shafts turns in the'opposite direction through said gears, a drive-shaft for the machine to be operated, a pulley thereon, belts passing around the last-aforesaid pulley and sai frame, a cylinder, a piston therein, a piston-rod therefor, a connection between the said piston-rod-and the said frame, means for automatically controlling the operation of said piston to determine the direction in which the said frame is to be rocked, and adjustable stops placed on both sides of said support for imiting the rocking movement of said frame.
Signed by me this 8th day of December,
FRANCIS B. COCKBURN. Witnesses: C. W. B. JoNEs, HENRY EGGERDING.
respectively around the pulleys mounted in-
US23936505A 1905-01-03 1905-01-03 Reversing mechanism for machine-tools. Expired - Lifetime US800428A (en)

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