US767789A - Driving mechanism for planing or like machines. - Google Patents

Description

PATENTED AUG. 16, 1904. R. W. & L. H. BATEMAN. DRIVING MECHANISM FOR PLANING 0R LIKE MACHINES.

APPLICATION FILED JAN. 29, 1904.

2 SHEETS-SHEET 1.

H0 MODEL.

FIG. I.

No. 767,789. PATENTED AUG. 16, 1904. R. W. & L. H. BATEMAN.

' DRIVING MECHANISM FOR PLANING OR LIKE MACHINES.

APPLICATION FILED JAN. 29, 1904.

'no MQDEL. 2 sums-sum 2.

UNITED STATES Patented August 16, 1904.

PATENT OFFICE.

RICHARD WILLINSON BATEMAN AND LOFTUS HANSON BATEMAN, OF

' HALIFAX, ENGLAND.

DRIVING MECHANISM FOR PLANING OR LIKE MACHINES.

SPECIFICATION forming part of Letters Patent No. 767,789, dated August 16, 1904.

Application filed January 29, 1904. Serial No. 191,205. (No model.) 7

T0 rtZZ whom it may concern.-

Be it known that we, RICHARD WILLINSON BATEMAN and LOFTUS HANSON BATEMAN, residing at Hanover street, Halifax, in the county of York, England, have invented certain new and useful Improvements in the Driving Mechanism of Planing or Like Machines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it 'appertains to make and use the same.

This invention relates to improvements in the method of and means employed for driving planing, shaping, slotting, and other like machines where it is necessary to quickly reverse the direction of motion of the table or of the ram.

The object of the invention is to facilitate the reversing of the machine byproviding means for stopping the machine when running in one direction and also instantly restarting the machine at full speed in the reverse direction and removing to a great eX- tent undue strain and shock on the drivingbelts and reducing to a minimum the power required to stop the movement of the table or ram in one direction, and to restart it in the reverse direction by utilizing the power or stored-up energy generated in an extremelyheavy wheel or pulley continuously revolving in one direction.

The invention consists of the use, in combination with the ordinary driving-pulley, of a heavy wheel or loose pulley, the momentum of which is imparted to the driving-wheel by a wide driving-strap or by the driving-strap and frictional face-contact between such pulleys at the moment of reversal in the ordinary driving mechanism, showing the slide-cover broken away. Fig. 4L IS an enlarged section is made broader than the driving-pulley for the Wide belt 4, which never entirely leaves the loose pulley 3. When the planer-table is beingdriven in one direction from one side of the machine, the belt on that side is over the fast or driving pulley and also partly over the loose pulley or fly-wheel 3, which consequently receives the same momentum as the driving-pulley 1 and is driven with it, the belt on the opposite side of the machine being entirely on the loose pulley or fly-wheel 3, and revolving in the opposite direction. IVhen now the table is moved in the reverse direction,the beltsLon each side of the machine are moved over so that the belt which was formerly entirely on the loose pulley is now transferred onto the driving-pulley. The momentum or energy stored in the loose pulley or fly-wheel 3 is imparted to the said drivingpulley at the very moment of reversing he movement of the table, the momentum of the loose pulley 8 being then maintained by the wide belt 4:, which, as aforesaid, never entirely leaves the loose pulley 3. By this means the great strain and shock put on the drivingbelts every time the direction of movement of the table is reversed is removed therefrom and is taken up by the momentum or energy stored up in the loose pulley or flywheel, and the table reverses instantly at its normal speed.

To increase the frictional contact between the heavy pulley 3 and the driving-pulley 1, the former has a concentric flange or rim 5 projecting therefrom and faced with felt or leather or other like material 6, and the abovementioned rim engages with a similar rim or flange 7. The engaging surfaces of the abovementioned flanges are cone-shaped in order to obtain a better and more gradual application of the friction. The driving belt or strap 1 is transferred from the loose pulley 3 to the driving-pulley 1 by a mechanism which at the same time that it moves the belt or strap 4 onto the driving-pulley 1 also tends to force the pulley 3 cndwise on its shaft 2, so pressing the frictional surfaces of the wheels 1 and 3 together.

The above-mentioned mechanism consists of the ordinary strap-fork 8, fixed on the bar, 9, supported by the standards 10. The bar 9 is connected by the swivel-joint 11 to the lever 12, free to rock on the pin or stud 13, supported in the frame 14:. To the lower end of the stud 13 is fixed a short crank-arm 15, connected by the rod 16 and spring-escapement 17 to the crank-arm 18, fixed on the vertical shaft 19. The latter is supported at its upper end in the bearing 20, and the lower end of such shaft (see Figs. 4 and 6) has a sector-pinion 21 supported in the foot-step 22 and engaging with the rack 23, formed on the sleeve of the coupling 24, to which is attached the two semicircular plates 25, which engage with the annular ring 26 in the boss of the loose pulley or fly-wheel 3. The shaft 2 is preferably protected against wear by the bushes 27, which are fixed thereon, and the end thrust against the driving-wheel 1 is taken up by the collar 28. (See Fig. 2.) The end thrust in the opposite direction is taken up by the antifriction-washers 29 and by the lock-nuts 30 on the end of the shaft 2.

The strap-fork mechanism is operated through the rod 31, (see Fig. 1,) which works in connection with the ordinary adjustable dogs for limiting the length of travel of the planer-table, the said rod being connected to the arm 32, carried on the bracket 83, and connected at its upper end by the link 34 to the slide 35, which is free to reciprocate in the slide-bed 36.

In the slide 35 is a cam-shaped slot 37 for the bowl or runner 38, mounted on the lever 12, and as the slide is moved backward and forward through the above-mentioned connections the lever 12 is oscillated thereby and the necessary movement is imparted to the strap-fork for transferring the belt from one pulley to the other.

Having now described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In driving mechanism, the combination, with a driving-shaft, and a driving-pulley secured thereon and provided with a clutch member; of a heavy loose pulley also provided with a clutch member and journaled concentric with the said driving-pulley, a sleeve provided with a toothed rack and operatively connected with the said loose pulley, a rock-shaft providedwith teeth which gear into the said rack, a lever secured on the said rock-shaft, a belt-shipper, a pivoted operating-lever connected to the beltshipper, and a connecting-rod between the two said levers, whereby the clutch members are placed in engagement when the belt is moved onto the driving-pulley.

2. In driving mechanism, the combination, with a driving-shaft, and a driving-pulley secured thereon and provided with a clutch member; of a heavy loose pulley also provided with a clutch member and journaled concentric with the said driving-pulley, a sleeve provided with a toothed rack and operatively connected with the said loose pulley,arockshaft providedwith teeth which gear into the said rack, a lever secured on the said rock-shaft, a belt-shipper, a pivoted operating-lever connected to the beltshipper and provided with a projection, aslide provided with an inclined slot engaging with the said projection, a guide for the said slide, means for sliding the said slide in its guide, and a connecting-rod between the two said levers, whereby the clutch members are placed in engagement when the belt is moved onto the driving-pulley.

In testimony whereof we affix our signatures in presence of two witnesses.

RICHARD WILLINSON BATEMAN. IAOFTUS HANSON BA'IEMAN.

Witnesses:

J. B. HOWARD, LoUIs WARDLE.

Images