US1667394A - Routing machine - Google Patents

Description

April 24, 1928. 1,667,394

v. ROYLE ROUTING MACHINE Filed J n-11, 1923 2 Sheets-S1196}: l

IN VEN TOR /e, ATTORNEYS April24,1928. 1,667,394

V. ROYLE ROUTING MACHINE Filed Jan.11, 1923 2 Sheets-Sheet 2 Patented Apr. 24, 1928.

. UNITED STATES! VERNON BOYLE, or rA'rnnson; NEW JERSEY."

ROUTING MACHINE. f

Application) fileiiJanuary 11,1923. Serial- No. 612,139.;

.This invention relates to an improvement.

to provide a guide'bar for the cutter arm which is very durable and wear resisting, the wear receiving portion of which may be readily adjusted tosuccessively; present new surfaces to the cutter arm as perceptible wear eventually takesiplace, and thesaid portion of which may. also be very easily removed and replaced withqa new portion without the necessity of disconnectingany substantial parts orreinoving themain body portion of the guide bar. ,1

Another object consists in providing a device which serves asa combined stop and holder for limiting the movement of the cutter arm. away from the work and for holding said arm in inoperative but readily accessible position. Another object consists in providing certain improvements in the form, construction and arrangementof the several parts,vwhereby the above named and other objectsmay be elfectively attained Practical embodiments of the invention'are shown in the accompanying drawings, in which Fig. 1 representsa top plan viewofa portion of a routing machine with my improvements applied thereto; y to Fig. 2 represents a detail elevation, on ;a large scale, showingmy improvementsand their immediate supporting,members;

Fig. 3 represents an end elevation of the parts shown in Fig. 2. H. I

Fig. 4 represents a vertical section taken in the plane ofthe line IVIV of Fig. 2, looking in the direction of the arrows, with the stopand holding deviceremoved.

Fig. 5 represents a similarview taken in the plane of the line VV of F ig. 2, looking in the direction of the arrows. v 3 a, i

Fig. 6 represents a front elevation of the stop and holding device, several positions of the cutter time being shown ,in ,ilotted lines. 1 a,

Fig. 7 represents an edge view oi the said device. 1.

Fig. '8 represents a perspective view of a modified form of stop andholding device, several positions of the cutter armqbeing shown in dotted lines. o i

In view of the factthat the routing machine itself constitutesno part of this invent-ion and that the same is applicable to many, if not all, approved forms of said machines, the samewillnot be described in detail, but it willbe noted thatthe machine in general is represented by 1 and, that it hasthe usual cutter arm 2, which is pivoted at 3 and carries a cutting tool 4 that is suit! ably driven'i by beltingfj for operation upon the work 6., Thefrontpmition' of the ma chine is providedwith a pair of supporting members 7,;that: also act as guides for lifters 8, 9, the upper ends of which are intended to carry the guide'bar which serves as a rest forthe cutter arm 2 as it is swung laterally by the operator during the function ng of themachine,:the lifters 8, 9 being commonly operable byya treadlev connected therewith by suitable mechanism for the purpose of elevating the cutting, tool 4: away from:thet workfi.v This mechanism is all thoroughly understood by those acquainted with this art so that it is not neeessary'here to more fully show or describe the same. The guide bars which have heretofore comm only lbeen employed havebeen made of wood, and there has been an objectionable, feature inthat the frictional engagement of the cutter arm, with the guide bar com-. paratively fquickly wears away portions of the. wood sothatit no longer presents a level surface parallel with the work, and thereby becomes unsuited to the accurate performance of its function aguide bar for the cutter arm vThis has necessitated frequent. removal of the guide bar and replaningof the iamein order to levelofEits operative sureace.; l

As is alsowellknowntheart, the oper- V to have the cutter arm held, in such out of the way position until he manually brings it back into operative position. ,To this end, it has been customary to provide the cutter armswith a-coil spring connected tosome part ofthe framing of the machine;.or to any other convenient point, whereby the arn will beyieldi'ngly held at-toneside ofthe machine and elevated'froin the level of the work. When the machine is thus equipped, p

it is necessary for the operator to move the cutter arm manuallyback into operatlve position and hold it there against tension of thespring while the cutting tool is in contact withthe work. Furthermore, if the i spring is not connected at an entirely suitable point or when it becomes stretched or weakened with usage, it is common for the cutter arm to swing back and inconvenience the operator at times when he desires it to be held clearly away from him and the work.

My invention contemplates improvements overcoming the objections hereinabove mentioned, as well as others inherent in the previous arrangements employed.

Referring to the guide bar structure, clear ly shown in Figs. 2 to 5 inclusive, it will be observed that the lifter 8 has a head 10 secured to 'its upper end by a'pin 11, while the lifter 9 has a hub 12 which embraces its upper end, and into the top of which the said lifter is riveted, as clearly shown at 13 in Fig. 4. 7

My improved guide bar consists of a main body portion 14, composed of suitable metal, which is secured to the head 10 and hub 12 by cap screws 15, 16 which fit loosely in apertures 17, 18 formed in the body portion 14. This loose fit enables the guide bar to be adjusted to a perfect level by screws 19, 20 that are threaded into the head 10 and hub 12 respectively and bear against lugs 21, 22 formed at the lower portion of' the body member 1 1.

The upper portion of the body member 14 has a longitudinal slit 23 which is developed at its upper end into curved form in order to constitute a seat for a rod 24 composed of steel or other suitable wear resisting metal. The seat is sufficiently deep so that, the rod 24 is slightly more'than half embedded therein, and a series of screws 25 are arranged so as to clamp the upper edges of the body port-ion 14 toward each other and thereby firmly grip the rod 24 in its seat, as clearly shown in Figs. 4 and 5. As the material of the walls of the longitudinal slit 23 is relatively thin there is naturally a certain yielding flexibility so that they may be moved toward and away from each other by the screws 25 to accommodate rods of various diameters. The end of the rod 24 has a kerf 26, as shown in Fig. 3, and it will be seen that by slightly loosening the screws 25, the rod may be turned with the aid of a screw driver so as to present different portions of its surface on the top of the guide bar. A further loosening of the screws 25 will permit the complete removal of the rod 24 and its replacement by a new one. a

As a result of this construction, the guide bar is composed of wear resisting material, its operative surface member, when worn, may be quickly turned so as to present a perfectly level surface without the removal of any part or the necessity of any such operation as planing, and its surface member may be bodily removed and replaced by a as to be adapted to partially embrace the cutter arm, as indicated at 29, Fig. 6, and prevent itfrom upward or lateral movement under the influence of the usual spring; while its lower extremityor prong is curved slightly upwardly in order to form a seat to prevent lateral or downward movement of the cutter arm, represented at 30, Fig. 6, which is not provided with the customary spring. The device itself, by reason of its location at the end of the guide bar, con: st-itutes a stop which prevents further horizontal swinging movement of the cutter arm, as shown at 31, Fig. 6, after the latter has come into contact therewith. In the position marked 31, the arm is supposed to be resting upon the guide bar and the tool to be at the level of the work.

The ofisetting of the upper extremity or prong of the device from the plane of the lower extremity or prong, as hereinabove mentioned, facilitates the entrance of the cutter arm into engagement with the device,

as indicated in positions 29 and 30, Fig. (3.

r In Fig. 8, I have shown a modified form of the combined stop and holding device. This device, which is represented by 82, is intended to be secured to the guide bar in the 1 same manner as the preferred form. Its

shape, however, is somewhat different from that of the preferred form and it IS preferably composed of sheet metal. This form is designed to cooperate with the end of the cutter arm in four positions of the latter; the one marked 33 indicating the position in which the arm may beheld against upward and lateral movement when it is pro vided with the customary spring; the ones marked 34: and 35 indicating the positions in which the arm may be held against downward and lateral -movement when it is not provided with the usual spring; and the one marked 36 denoting the position of the cutter arm when it abuts the device as a stop. In the positions 33, 34 and 35,.the arm is held elevated to such an extent that the cutting tool is above the level of the work, while in the position marked 36, the arm is supposed to be resting upon the guide bar and the tool to be at the level of the work.

It will be understood that various changes may be resorted to in the form, construction and arrangement of the several parts without departing from the spirit and scope of the invention; hence, I (lo-not intend to be limited to the details herein shown and described except as they are included in the claims.

\Vhat I claim is:

1. In apparatus of the character described, a guide bar having a metallic weal ing surface.throughout its length and neans supporting said bar to allow its rotation to present different bearing surfaces for the support'of a sliding tool arm.

2. In apparatus of the character de scribed, a guide bar having a longitudinal slit therein to form yielding walls, and a wearing surface supported throughout its length in said slit between said walls.

3. In. apparatus of the character described, a guide bar having a longitudinal slit therein to form yielding walls, and a' metallic wearing surface supported throughout its length in said slit between said walls.

4-. In apparatus of the character described, a guide bar having a longitudinal slit therein to form yielding walls, a wearing surface supported throughout its length in said slit between. said walls, and means for removably clamping the wearing surface in the slit.

5. In apparatus of the character described, a guide bar having a longitudinal slit formed therein, the opening of said slit being curved in cross section, and a substantially round metallic wearing surface supported throughout its length in said curved portion of the slit to permit rotation of the said wearing surface.

6. In apparatus of thecharacter de scribed, a guide bar having a longitudinal slit formed therein, the opening of said slit being curved 1n. cross section, and a substantially round metallic wearing surface supported throughout its length in said curved portion of the slit, whereby said wearing surface may be adjusted in a rotary direction to present different portions of its surface for contact with the cutter arm of the said apparatus.

7. In apparatus of the character described, a guide bar having a slit formed therein, the opening of said slit being curved in cross section, and a substantially round wearing surface supported throughout its length in said curved portion of the slit, the end of said wearing surface being provided with a kerf' for adjusting it in a rotary direction to present difi'erent portions of its surface for contact with the cutte arm of the said apparatus.

8. In apparatus of the character dethe cutter arm of the apparatus in an inoperative position with respect to the guide bar.

/ 10. In apparatus of the character described, a guide bar, and a device mounted on one end of said guide bar for holding the cutter arm of the apparatus in an inoperative position with respect to the guide bar and against upward movement.

11. In apparatus of the character described, a guide bar, and a device mounted on one end of said guide bar for holding the cutter arm of the apparatus in an inoperafive position with respect to the guide bar and against downward movement.

12.111 apparatus of the character described, a guide bar, and a device mounted on one. end of said guide bar for holding the cutter arm of the apparatus in an in operative position and against lateral movement. I

13. In apparatus of the character described, a guide bar, and a device mounted on one 'end of said guide bar for holding the cutter arm of the apparatus in an inoperative position with respect to the guide bar and against upward and downward movement. I i 3 14. In apparatus of the character "described, a guide bar, and'a device mounted on one end of said guide bar for holding the cutter arm of the apparatus in an inposition with respect to the gulde operative bar, and against upward, downward and. lateral movement.

15. In apparatus of the character de scribed, a. guide bar, and a device mounted on one end of said guide bar for holding the cutter arm of the apparatus in an inoperative position with'respect to the guide bar, said device consisting of a two pronged hook having one prong offset from the plane of the other.

In testimony, that I claim the foregoing as my invention, I have signed my name this fifth day of January, 1923.

VERNON I BOYLE.

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