US12884A

US12884A - barber

Info

Publication number: US12884A
Authority: US
Publication date: 1855-05-15
Anticipated expiration: 1872-05-15

Description

" Toull whom t may concern i s'. BARiiiiitllfolrrtosToN,y ifIAssAuHusE'rfrs, AssiGNoii .'ro ARoBfr. J. MARCH-Inn, orl

Bnoornnejcnovn, New Bronx.-

` "Fee CUTTING www@ FORMS.-

`Specicaton forming"`part ofIietters Patent No. 12,884,dated May 15, 1855 {Reissued September 1o, `1861, No. 1,226.

` *Be `it known that LJ. S. BARBER, of Bosy ton, in the county of :Suffolk andState of Massachusetts, have invented a new and useful Machine for the @Purpose of Turning i Ovalfand other Forms, ofwhichthe following isa full, clear, and exact description, l"reference being hadto the `annexed draw- Wings, making part of this specification, in

Figure 1 is an isometrieview of my machine Fig. `2 a vertical section upon the line X X, the table Cbeingshown in elevation.

` Ovals for picture and looking glass frames have either been turned by hand upon an eccentric `or elliptical i lathe, or they have beenfformed byrotary cutters revolving in stationarybearings, the blanks being secured #to suitably shaped forms or patterns and i held up to the cutters by hand while the patterns are guided bybearing against the cutter shafts; both of these operations are slow `and require to` be performed by skilful hands.`

Theobj ect ofmy inventionis to perform y this work by `machinery which shall be en- `tirely automatic and shall operate rapidly,

and without requiringthe care of a skilful attendant. `For this purpose I employ rovtary cutters to giveto the oval the molding desired, the cutters which run in sliding boxes being kept up to their work by `weight- 1 ed cords orsprings and guided so as to form the "oval required by patterns in a manner which will now be described.

` n `In thefaccompanying drawings theframework ofthe machine is indicated in red. A are the fast and loose pulleys, to the shaft of which issecured the driving drum B, and also the pulley a, from which through -th`e` band Z) motion is communicated to the vertical shaft d; this shaft is stepped into the lever f, pivotedlat e. v F

" C is a horizontal table or `disk secured to the shaft D," which slides freely up anddown "in the boxes g in which it runs.`

E is a leverypivo-ted tofthe framework at raised or lowered. The lever E is secured fin position by being caught inthe teeth le.

' m are cutter shafts which run in carriages fn., which are allowed to slide freely in the framework and are drawn constantly in -one direction by the cord 0, and weight p.

To the center of the table C, is secured the pattern F, and to the extremity of the cutter shafts m are secured the rollers g which bear upon the pattern F, one upon its interior and the other upon its exterior, the rollers being kept constantly in contact with the pattern by the weight p, as before explained.

r are molding cutters secured to the shafts m of the exact fo-rm required to give the desired section to the oval.

s are rods secured to the sliding carriages n, by means of which the cutters are moved away from their 'work when required. The `cutters `are caused to revolve by the bands H from the driving drum B, which give motion to the pulleys I upon the cutter shaft m. A slow motion is communicated to the -table C bythe pinion t, which engages with the teeth fw upon its periphery.

Operation: The pinion t is thrown out of gear with the table C, by moving the lever f, the table is then dropped by releasing the lever E from the notches k, a blank of the general form of the pattern F is then secured to `this pattern, so that as the rollers g bear upon the periphery `of the pattern, the cutters r shall operate upon the blank; the table is nowiraised by depressing thelever E, and the pinion t is thrown into gear with the teeth w; the blank is thus slowly rotated while the cutters r are operating upon it, and thus by a single revolution .of the table C the oval is completed, having a general form in section corresponding tothe cutters r, one of which forms the outside of the molding, and the other the inside.

It is evident that other forms or figures may be cut upon this `machine as well as ovals, such as squares, circles or polygonal figures, a separate pattern being required however for every different figure to be cut; these patterns may be made of hard wood or of metal.

ing cutters 1 in combination with the table 10 C, and pattern F, connected together and operating in the manner substantially as herein set forth.

JED. S. BARBER.

Witnesses CONSTANCE BROWN, SAM. COOPER.

[FIRST PRINTED 1913.]