Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1611381 A
Publication typeGrant
Publication dateDec 21, 1926
Filing dateJun 3, 1926
Priority dateJun 3, 1926
Publication numberUS 1611381 A, US 1611381A, US-A-1611381, US1611381 A, US1611381A
InventorsSalsbury Arthur L
Original AssigneeSalsbury Arthur L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Routing machine
US 1611381 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Dec. i1 192s. 1,611,381

A. L. SALSBURY ROUTING MACHINE Filed June 5, 1926 Patented Dec. 21, 1926.




Application filed June 3,

My invention relates to routing machines of the port-able type having an open ringshaped base, and it is my object to prov ...e

such a machine which is of extremely light construction to facilitate handling by the operator.

More particularly it is my object to provide a machine in which a very fine vertical. adjustment of the motor is obtained by slidably mounting the motor on a pair of posts, which serve also as handles for the two hands of the operator. and are of such construct-ion as to interfere to the least possible degree with the View of the operator.

A further object is to provide such a routing machine, mounted upon such a pair of posts and having means for vertically adjusting the motor relative to said posts, and means for locking the motor relative to said posts so that the vibration thereof will not act upon said vertically adjusting means.

An important object of my invention is to provide such a routing machine to accomplish the foregoing objects, and yet which is of the utmost simplicity and cheap ness of construction without sacrificing durability.

With these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth. pointed out in my claims and illustrated in the accompanying drawings, in which:

Fig. 1 is a plan view of the machine.

Fig. 2 is an elevation of the machine.

Fig. 3 is a vertical sectional view, taken through the supporting and adjusting mechanism of the machine.

Fig. 4 is a horizontal sectional view, taken on the line 4-4 of Fig. 2.

I am aware that it is not new in routing machine construction to provide a motor driven bit, mounted over a ring-shaped base to support the bit upon the work and yet to allow the operator to view the work. The most usual form of portable machine employs such a base and a screw threaded motor housing, into which the motor is threaded to allow vertical adjustment. Such a construction is rather expensive, and there is a need for a cheap and more simple form of portable machine.

I have obtained extreme simplicity and cheapness of construction, together with 1826. Serial No. 113,435.

other advantages which will hereinafter appear in the machine shown in the crawings, in which the numeral. 10 has been used to indicate a ring-shaped base, preferably of cast aluminum or some such light metal. A ring 01 celluloid or felt, 11, is secured to the base to prevent scratching of the work as the base is slid thereover.

A pair of posts, 12, are cast integrally with the base and are positioned diametrically opposite each other. Into the upper ends of "he posts 12, are threaded studs, 13.

The motor, 14, has the usual shaft, 15, carrying a chuck, 16, in which may be secured a bit, 17.

Secured to opposite sides of the motor casing, by means of screws, 18, are sleeves, 19, provided with vertical openings, 20, diametrically opposed to each other. The openings, 20, are somewhat larger than the studs, 13, as appears in Fig. 3, and loosely receive the studs. Thumbs nuts, 21, are threaded upon the studs below the sleeves and support the weight of the motor, and lock-nuts, 22, are threaded onto the studs above the sleeves.

The base, 10, is placed upon the etching or plate to be finished, and the thumb nuts, 21, are rotated downwardly to bring the bit, 17, into engagement with the work. The lock nuts, 22, are then rotated downwardly and tightened against the ears, 19, to prevent chattering or jerking of the motor.

I find that it is necessary to maintain the lock nuts tightly engaged against the ears, 19, in order to prevent the vibration of the motor acting upon the thumb nuts, An looseness in the engagement of the ears, 19, with the nuts, 21, will allow such vibration to cause the nuts, 21, to rotate downwardly from their respective spindles,

The height of the bit may be adjusted while the motor is in operation by adjusting and holding the nuts, 21, with the outer fingers or the palms of the hands, and rotating the lock nuts, 22, between the thumbs and first fingers of the respective hands of the operator.

It is apparent that the construction is a very inexpensive one. The standard type of motor hous ng may be used, and the ears, 19, may be readily secured thereto. The base is formed of a single casting, and the studs, 19, are of standard threaded. rods, tapped into the posts, 12.

Some changes may be made in the con struction and arrangement of the parts of my invention without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims any modified forms of structure or use of mechanical equivalents which may be reasonably included Within their scope.

I claim as my invention:

1. In a routing machine, a ring-shaped base hav ng a pair of upwardly projecting diametrically opposed posts, threaded studs secured in said posts and projecting up Wardly therefrom, a motor having a bit projecting downwardly through said ring, said motor having a pair of diametrically opposed ears provided with vertical openings loosely receiving said studs, and thumb nuts on the studs above and below said. ears.

2. A routing machine comprlsing a ringshaped base, a pair of threaded studs secured to said base in diametrically opposed positions and extending upwardly therefrom, a motor having a bit project ng downwardly through said ring, said motor having a pair of diametrically opposed ears provided with vertical openings loosely receiving said studs, and thumb nuts on the studs above and below said ears.

3. A routing machine comprising a. ringshaped base having a pair of integral, diametrically opposite, upwardly extending posts, threaded studs secured in said posts and projecting upwardly therefrom, a motor having a bit projecting downwardly through said ring, said motor having a pair of diametrically opposed ears provided with vertical openings loosely receiving said studs, and thumb nuts on the studs above and below sa d ears.

Signed at Sioux City, in the county of Woodbury and State of Iowa, this 27 day of May, 1926.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2693208 *May 11, 1951Nov 2, 1954Stewart Victor MPower-operated routing tool
US3102483 *Apr 28, 1961Sep 3, 1963Outboard Marine CorpVent fan and bilge pump
US3902042 *Aug 15, 1973Aug 26, 1975Goldfarb Adolph EElectrically heated tool for cutting designs in a surface
US4056136 *Jul 12, 1976Nov 1, 1977Miller Donald MPortable tool guide
US5911563 *Dec 23, 1996Jun 15, 1999Carrier CorporationAir conditioning blower motor assembly with improved accessibility
US6318936 *Jun 13, 2000Nov 20, 2001Mcfarlin, Jr. Robert E.Plunge router adjustment mechanism and method
US6520227Aug 8, 2001Feb 18, 2003Robert E. Mc Farlin, Jr.Apparatus and method for mounting routers in tables
US6896454 *Aug 14, 2001May 24, 2005Hills Industries LimitedElectric power tool
US7556070May 4, 2005Jul 7, 2009Milwaukee Electric Tool CorporationRouter
US7669620Mar 17, 2009Mar 2, 2010Milwaukee Electric Tool CorporationRouter
US7900661Aug 19, 2008Mar 8, 2011Milwaukee Electric Tool CorporationPlunge router and kit
US8087437Sep 8, 2009Jan 3, 2012Techtronic Power Tools Technology LimitedRouter
US8747036 *Mar 18, 2011Jun 10, 2014Makita CorporationPower tools
US20040253068 *Aug 14, 2001Dec 16, 2004Graham GerhardtElectric power tool
US20090050236 *Aug 19, 2008Feb 26, 2009Milwaukee Electric Tool CorporationPlunge router and kit
US20090173410 *Mar 17, 2009Jul 9, 2009Mcdonald RandyRouter
US20100126627 *Sep 8, 2009May 27, 2010Goddard Jay ARouter
US20110229283 *Mar 18, 2011Sep 22, 2011Makita CorporationPower tools
U.S. Classification409/182, 310/91
International ClassificationB27C5/00, B27C5/10
Cooperative ClassificationB27C5/10
European ClassificationB27C5/10