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Publication numberUS1352196 A
Publication typeGrant
Publication dateSep 7, 1920
Filing dateApr 21, 1919
Priority dateApr 21, 1919
Publication numberUS 1352196 A, US 1352196A, US-A-1352196, US1352196 A, US1352196A
InventorsSamuel Hunter
Original AssigneeSamuel Hunter
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electric routing-machine
US 1352196 A
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Description  (OCR text may contain errors)




1,352,196, Patent edSept. 920,

L fia 6 S. HUNTER.



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1 352,1 96, Patented Sept. 7, 1920.


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V drawings which constitute a -srArsf SAMUEDHUNTER, 0F BELLEVUE, .rENNsYLvANIA.



1 '0 all whom it may concern:

Be it known that I, SAMUEL HUNTER, a citizen of the United States, residing at Bellevue, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Electric Routing-Machines; and I do declare the following to be a full, clear, andexact description of the invention, such as will e11- able others skilled in the art to which it appertains to make and use the same. 1

My invention has fori'ts object to provide an improvedmachine for routing the side .boards or stringers of stairways so as to receive the ends of the steps'and risers, provision being made whereby the numerous vertical and horizontal cuts may be tapered to permit the usual wedges to be employed for forming tight oints at the ends of said steps and risers. l,

With the foregoing general object in view, the invention resides in certain novel features of construction and unique combinations of parts to be hereinafter 'fully'described andclaimed, the descriptive matter being supplemented by the accompanying part of this'a'pplication and in which;

igures 1 and 2 are top plan views of the improved machine, showing the two posiacross a board or stringer- Fig. 3' is a longitudinal section on the tions of the same incuttinga tapered groove plane of the line 3-3 of Fig. 1;

' Fig. 4 isa detail side elevation showing the two carriages, the tracks upon which they are mounted and the manner in which a part of the upper carriage may be tilted vertically;

.Fig. 5 is a view somewhat similar to 4, with the parts inoperative position and disclosing more particularly the latch for:

holding the tool adjusting wheel against movement;

of Fig. 3;-

Fig. 6 is a verticaltransverse section, on

the plane of the line 66 of Fig. 3;

Fig. 7 is a horizontal section on substan-;

tially the plane indicateclby the line 7'7 Fig. 8 is a fragmentary bottom plan showing more particularly the manner in which the upper track is pivotally connected with the lower carriage;

Fig. 9 is a vertical'transverse sectionon the plane of the line 9+9 of F ig.'8; V


Specification of Letters Fatent. 3 Patented" S9191). 7,1920. Application filed April 21, 1919. Serial 291,525; I

o FIeE A the numeral 1 designates a suitable table or i work support having a rest'itfiwhichthe Y" work WV. abuts, the edges of said table being suitably shaped to guide a pairof slides 3 which may be locked. againstmovement by are pivotally mounted on the slides 3 and by means of clamping screws 6 may be a a. set screws or the like Track-supports 5 locked again stturning thereon, said sup- 1 ports upholding the ends 0ft]. lower track which consists of a pair of side rails 7 mg idly secured to one: of said supports fand slidable through the other so'that" the angular relation of the track T in respect to the work may be varied as occasion:may de- Mounted slidably on thetrack T is a 'lower carriage C which consists of a horizontal U-shaped plate 8 and. bearings Qdepending therefrom j and niounted. slidably on {the tracks 7, said carriage being limited in "its movement by means of ad ustable stop" 'collars. 10 and 11 mounted on one of said rails 7. The U-shaped. plate 8 is provided with f edges of. its arms and similarly shaped opposed arcuate seats 12 adjacent the inner flanges 13 engage saidseats and are provid ed, on their loweredges with lateralextensions 14 as shown clearlyin Figs. 8 and 9, said flangesdepending from a second 5 U- shaped. plate-15' which rests on the plate 8. The flanges 13 establisha pivotal "connection between the two plates 8 and 15 to permit the latter to move horizontally upon the former and when turned to the required amount, the extensions-Mare freed so that the plate 15 maybe entirely removed.

A second track T is disposed abovethe track T and consists of-.a pair of side-rails 7 secured at one end tothe plate 15, the otherend of saidltracksbeing: provided with .a transverse shoe 16, which rests slidably on the rails? for transverse movement thereon, said shoe having a longitudinal slot 17 I in which a pair of stops 18 are adjustably mounted, said stops havingthumb nuts or the'lilie 19 by means of which they may be set in any reqiuijred' position so asto strike the rails 7 to limit the horizontal movement of the rails 7, which move bodily with plate V 15. A seoondishoe QO eXtends beneath'rails 7 and by any suitable means such as that shown at 21 in Fig. 10, said shoe is connected with and'spaced froin't he'shoe' 16 so that the two and said connecting means consti? tute ayoke to prevent relative vertical movement of the two tracks T and T.

- 'A second carriage. C is mounted on the 1 track T and includes a transverse bar 22 having slides 23 on its ends mounted on the rails 7, a support24: in the form of a housmg being hinged at 25 to said slides 2350' thatit may tilt as shown inFig. 4L when required.- The end of the support 24: opposite thehinge25 is provided with pairs of de-' pending lingers'26 which straddle the rails 7" as shown most clearly inFigs, Sand 9. I

An electric motor 27 is mounted. on the support 24yand the shaft 28 of said motor appropriate routing'tool 30atits lower end,"

extends slidably'but non-rotatably'into a' vertically" disposed, arbor .29 carrying any 7 the upper end of said arbor being rotatably niountedin a 'collar31 having a rack 82 on one side meshing witha pinion 33'on the'inner'end of a transverse sha'lt 34k. "One end of said shaftiis provided with anoperating knob. 35 by means of which it may be rotated while a toothed wheel 36 iscarried on theother end ofsa'id shaft cooperates with a spring pressed latch 37," whereby the shaft 34L may beheld'againstfurther movement "after beingrotated toiset the tool 30 at the p'roperelevation. r V e V In operation, the work W is placed on the table 'l'against the rest 2. and'the machine is set -at the required angle, the clamping screw dbeingthen tightened. The carriage C'f is now moved along the track T by means of handles 38 with which it is 'provi ded so as to bring the routing toolfi O againstthe edge of the work p. Thisc'arriage 1s. then fed forwardly at an appropriate rate V ofspeedlwiumm overworking-the tool 30 so 7 that a groove G with parallel sides is formed, the rails 7 crew track T. being then disposed; in the same vertical planes with the I rails 7 of the track Twithone 'of the stops the groeve G hasbeencut of suflicient length,

a handle 39 on the carriage Cis grasped and:

l abuttijng' one rail 7 to retain the: parts in this position as indicated in Fig.1; -When Y said carriage is, fed rearwardly along the rails 7' until limited by-the stop 11 (Fig. During'this movement, the tool 30'will travel in the cut previously made but the track T" is now swung laterally to-theposition shown in Fig. 2 so that-as the carriage C is returned along said track, one SlClQ of the V 11 Fig-y and Since ib s s p is d s ab e ondcarriage.

carried by said second carriage side of the grooves may be easily regulated. After first cutting all of the grooves for the steps or'the risers, as the case maybe, the.

angular relationof the machine to the work 1s reversed and the other grooves are then formed. The grooves for the risers are tapered throughout their lengths 'and the operation of the machine in cutting them is therefore slightly different from'that when cutting the step grooves. 7 By tilting the support 24 4:, an emery wheel or the like may be substituted for-the. routing tool and used to ad- Vantage Similarly,'when the parts are in this position, the machine may. well be used for other purposes by applying any desired tool. .Also, it will ,be' understood that althoughI have-herein described a routing .to ol applied tothe machine, other ap propriate type of tool may be employed ac:

.. a V and the motor- 27 to the horizontal position shown in .the amount of material'cut away from the cording-to th'e use .to'which the machine is tobe'put From the foregoing, takenin connection struction, manner of .operationand advantages' of the improved machine will bereadily understood'without requiring a'more extended explanation but I wish-to :state with the accompanying drawings, the conthat although certain specific details have beenshown and. described for illustrative purposes, numerous changes may be made without sacrificing the principaladvantages.

I claim: 7 a

1. YA routing machinecomprising and' means for holding it in .operative relation to the work, a. carriage sl dable along said track, a second track plvotally mounted von said carriage for horizontal movement, a

second marriage slidable on said second."

track, and a routing tool carriedby said sec 2. A routing machine comprising ajtrack andmeans for holding it in operative relationto thework, a carriage. slidable along said tracln a second track pivotally mountmeans carried by said shoe-:Eor limiting;- the ed on said carriage for horizontalymovement, a shoe carrled by said secondtrack and shdable transversely on" the other, stop swingingmovement' ofsaid second traclein both directions, ase'condicarriageslidable along said second track,' and a routing tool 7 1 3. A. rout ng machine comprising a track and means for holding itin operative relation t'ofthe work, a carria e slidablealong said track, a second track plvotally mounted' on sand carriage for horizontal movement, a

shoe carried by said second track ahdsliding the swinging movementof saidsecond able transversely on the other, alpairl of stops adjustable along saicLshoe for limittrack'ln both directions, a second carriage 1-30 slidable along said second track, and a rout- I ing tool carried by said second carriage.

4. A routing machine comprising a track and means for holding it in Operative relation to the Work a carriage slidable along said track a second'track pivotally mounted on said carriage for horizontal movement, ashoe carried by said second track and resting for transverse sliding on the other, a second shoe extending beneath said first named track both shoes extendinglaterally beyond said first track and the upper shoe having a longitudinal slot, means spacing and connecting the ends of the shoes, a pair of stops ad ustably mounted in sa1d slot for limiting the swinging movement of sa1d sec- 0nd track, in both directlons, a second carriage on said second track, and a routing tool carried by said second carriage.

5. A routing machine comprising a track and means for holding it in operative relation to the Work, a carriage slidable along said track, a second track pivotally mounted on said carriage for horizontal movement, a g

second carriage slidable along said'second track; and a routing tool having a hinge connection wlth said second carriage for permitting said tool to swing vertically.

6. A routing machine comprising a track and means, for holding itin operative relatlon to the Work, a carria e slldable along saidtrack, a second track plvotally mounted on said carriage for horizontal movement, a

slide on said second track, a support hinged to said slide at one end and having dependsecond track, and a routing tool carried by said support. i a 7 1n testimony 'Whereof I have hereunto Set JOHN C. BREA'MNQ, T. A. MoNARv.

ing fingers at its other end straddling said

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2939499 *Sep 16, 1957Jun 7, 1960Olaf PearsonAutomatic machine for routing right and left-hand stair stringers
US3450001 *Mar 31, 1967Jun 17, 1969Fortune William JGuide and work holder for making router cuts
US3841368 *Aug 20, 1973Oct 15, 1974Ritter NRouting device
US4673011 *Aug 12, 1985Jun 16, 1987The Laitram CorporationStaircase stringer fabricating apparatus
US4769920 *Apr 20, 1987Sep 13, 1988Connor Jr Richard W OApparatus for guiding a router to cut grooves for stair treads and the like
U.S. Classification144/136.6
International ClassificationB27F5/00, B27F5/02
Cooperative ClassificationB27F5/02
European ClassificationB27F5/02