US879734A

US879734A - Metal-planing machine.

Info

Publication number: US879734A
Application number: US25114505A
Authority: US
Inventors: Edwin P Carpenter
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-03-20
Filing date: 1905-03-20
Publication date: 1908-02-18
Anticipated expiration: 1925-02-18

Description

No'.879,784. PATENTED FEB.18,'1908.

E. P. CARPENTER. A

METAL PLANING MACHINE. APPLICATION FILED numb. 1905,

WI TNESSEE //v VEN TUR,

EDWIN P. CARPENTER, OF PAWTUOKET, RHODE ISLAND.

METAL-PLANING MACHINE.

Specification of Letters Patent.

Patented Feb. 18, 1908.

Application filed March 20. 1905. Serial No. 251.145-

To all whom it may concern:

Be it known that I, EDWIN P. CARPENTER, a citizen of the United States, residing at the city of Pawtucket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Metal-Planing Machines, of which the following is a specification.

My invention relates to an improved feeding mechanism adapted for a metal planing machine.

The object'of my invention is to provide a feeding mechanism for engagement with the vertical rack-bar and arranged to impart a continuous movement in one direction, to the feed-screw of the cross-head.

The construction and arrangement of details of my invention will be described in the following specification, reference being had to the accompanying sheet of drawings, wherein:

Figure 1 represents a partial top plan view of the cross-head-frame, showing respectively the cross-head, the tool-holder mounted thereon, the feed-shaft and feed screw, together with my improved feeding mechanism for imparting a continuous motion to the latter. Fig. 2 is a vertical sectional view, taken on line y.-y. of Fig. 1, showing the front end of my improved feeding-mechanism. Fig. 3 is an enlarged sectional view through the feeding mechanism, taken on line 2.2. of Fig. 2, and showing the rack-bar in dotted outline, and, Fig. 4 is a rear end elevation of the feeding-mechanism.

Like numerals indicate like parts.

1 represents a partial sectional view of the machine-frame, which is of a size and shape to properly support the cooperating parts. 2 represents the crosshead-frame secured to said machine-frame and located above the level of the work-table 3. The cross-headframe 2 is provided with

edge ribs

4, 4 to guide and support the slide-block 5, on which is mounted the feed-screw-holder 6, having the usual screw-rod 7 for manual adjustment of said holder. On the feed-screw-holder 6 is secured the head-piece 8 to which is bolted the tool-holders 9, 9, which carry the

cuttingtools

10, 10. The tool-holders 9 are clamped to the head-piece 8, by a plate 16, through which bolts 17, 17 pass and are secured in said piece 8. 18 represents the feed-shaft which has operative connection with the usual bevel gear arrangement (not shown) to impart an up and down movement to the cross head. 19 represents the feed screw which has threaded connection with the slide-block 5, in the usual manner. The for ward terminals of the feed-shaft 18 and feedscrew 19 are provided with collars 20 and 21 which are slidable upon keys secured in their respective shafts, and each of said collars formed with a

pinion gear

22 and 23 respectively, as shown. The aforesaid parts being of the ordinary construction and arrangement, common to machines of this class.

On the side of the cross-head-frame 2, ad jacent the terminals of the feed-shaft 18 and the feed-screw 19, are mounted two

shafts

24 and 25, each revolubly supported in the journal bearings of a plate 26, which is bolted to said frame 2, as shown in Figs. 1 and 3. The inner terminal of the shaft 24 is provided with a spur gear 27, loose upon said shaft and carrying a pawl 28. A ratchet wheel 29 is keyed upon the shaft 24, ad-

jacent the gear 27 and arranged to be engaged by the pawl 28. The inner terminal of the shaft 25 is provided with a spur gear 30, loose upon said shaft and carrying a pawl A ratchet wheel 32 is keyed upon the shaft 25, adjacent the gear 30, and arranged to be engaged by the pawl 31. The

gears

27, 30 are in vertical alinement and at all times in mesh with the reciprocating rack-bar 33. The forward end of the shaft 24 is keyed to a spur gear 34, which is in mesh with an equal size gear 35 keyed upon the shaft 25. On the shaft 25, adjacent the gear 35, is keyed a large spur gear 36, of a size to mesh with either of the

pinion gears

22 or 23, of the feed-shaft or feed-screw, when desired.

When a casting is mounted in position to be planed or finished, the pinion gear 23 is moved manually into mesh with the large spur gear 36, and as the rack-bar 33 descends the loose gear 30 rotates, and its pawl 31 causes the ratchet wheel 32 to revolve the shaft 25, and the large spur gear 36 being keyed to this latter shaft and in mesh with the pinion gear 23, causes the feed-screw 19 to revolve, by this said downward move ment of the rack-bar 33. The large spur gear 36 always rotates in the same direction, as indicated by the arrow in Fig. 2. As the rack-bar 33 ascends the pawl of the loose gear 27 engages the ratchet wheel 29, thus rotating the shaft 24 in a direction the reverse of that indicated by the arrow in Fig. 4, and at the same time this movement causes, by means of the

meshed gears

34, 35, to revolve the shaft in the direction i n dicated by the arrow in Fig. 2, thereby transknitting motion to the

gears

36, 23 and causing the feed-screw 19 to be driven in the same direction, by this upward movement of the rack-bar 33, as by the latters downward movement already described. Therefore, by my construction and arrangement of parts, I provide a feeding mechanism for a metal planing machine whereby the rack-bar is caused to impart a continuous rotative movement of the feed-screw 19, with each upward and downward movement of said bar.

What I claim and desire to secure by Letters-Patent, is-

In a metal planing machine, the combination with the feed-rack-bar and feed-screw having pinion thereon, of a plate secured to the machine-frame and provided with journal bearings; two horizontally arranged shafts rotatably mounted on the journal. bearings of said plate; a gear loose on each of said shafts and in mesh with the rack-bar; a ratchet wheel keyed on each of said shafts and each wheel having itsteeth disposed in the reverse order of the other wheel; a pawl carried by each of said gears to engage the teeth of said wheels; a gear keyed on each of said shafts and in mesh with each other; and a gear keyed on one of said shafts and arranged to mesh with the pinion-gear of the feed-screw, substantially as shown and for the purpose specified.

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

EDWIN P. CARPENTER.

Witnesses:

JosEPH DERMODY, CHARLES F. BLACK.