US1853276A - Machine for the manufacture of glass articles - Google Patents

Description

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//VVN7'0/? SYDNEY HUNT,

H A roe/var April 12, 1932. s. HUNT MACHINE FOR THE MANUFACTURE OF GLASS ARTICLES Filed Sept. 5, 1927 Ms g v l atented 'Apr. 1 2, 1932' QNL'DEFD; STAT ESP A ENT crates SYDNEY HUNT, OF BIRMINGHAM, ENGLAND, ASSIGNOR TO JOHN WALKER & SONS LIMITED, OF LONDON,- ENGLAND, A BRITISH COMPANY.

MACHINE FOR THE MANUFAGTURE OF GLASS ARTICLES Applicationfiled September 3, 1927, Serial No.

This invention relates to'machines for the manufacture of glass articles and refers more particularlytothat type of such machines in' V which a parison-or equivalent mould is periodically brought into contact with molten glass, contained in atank or pot, and in which a knife isprovided adapted to be moved across the orifice of the parison mould *or the like in order to severthe trailing glass from the bottom of the mould.

With machines of this description it is nec-v essary to provide means for adjusting the position in which'the cutting takes place,

, both on account of the desirability'of being I able to use parison' moulds or the like of dif ferent lengths and in order to obtain great accuracy in the cutting position of the knife.

The knife adapted for machines of the foregoing type is usually mounted at the bottom of a long vertical shaft rotatable in suitable bearings so that by suitable mechanism. the cutting stroke can be effected at the proper time, and the object of the present invention is to provide improved means for at justing the spindle vertically, even when the machine is operating and to enable the spin:

r shaft.

dle to be held in the adjusted position. The operating and locking means are also so arranged that either a coarseadjustment or avery fine adjustment can be eifected,"andif necessary by the operator with the use of only one hand. 1 f

According tothe general principle of the invention, the knife. shaft is provided with a 5 screw thread of suitable pitch, at some suitable portion of its length, preferably at. some distance from the heat, and in the neighbour hood of a bearer arm or the like carrying one of the bearings for the knife shaft.

Associated with the bearer arm isla nut, which is restrained from longitudinal move ment but which is free to rotate.

Through this nut screws-the beforementioned screwthreaded portion of the'knife By this means, when the nut is rotated the knife shaft is moved upwards or downwards as the case may be.

The knife shaft carries adevice which is caused to rotate therewith and which device 217,442,:1nd it Great Britain June 15, 1927.

before mentioned nut so that when the shaft has been adjusted to the-required position by the rotation of the nut; further relative movement between the shaft and the nut can be prevented, by locking the device to the nut. I

Although the shaft and the nut are locked together, this does not prevent the knife shaft from being turned in the ordinary mannerto effect the cutting stroke by any suitable means allowing for its longitudinal move-,

ment.

clearly understood, it will now'be described with reference to the accompanying drawings and as applied to a rotatable machine of usual character furnished with parison' moulds adapted to be dipped periodically into a tank containing molten glass.

In the drawings Fig. 1 is a fragmentary sectional eleva tion shewing the knife and the method of adjusting the knife shaft. I

Fig. 2 is a side elevation of'a portion of Fig. 3' is a sectional plan on line 3-3 Fig. 2'

& shews to asma-ller scale a somewhat diagrammatic view illustrating the method of disengaging the saddle piece from the nut.

Fig. 5 shews also to a "smaller scale, a similar viewto Fig. 1 illustrating-a slightly clifferent form of arm carrying the knife shaft work of the machine not shewn in the drawings, 1s an arm 10 for each parison mould (not shewn). This arm 10 the outer end only of which is shewn, is of such length that r the knife 9 which iscarried therefrom can conveniently co-operate with" the bottom of the parison mould. p

At the end of this arm 10 is a bore 11 Tn order that the invention may be more through which the knife shaft 12 passes. The

upper side of the arm 10 supports a ball thrust bearing 13 which is partly located in a recess 14 coming at the under side of a nut member 15. The nut15 is provided with acircumfer ential groove on the exterior above which is located a flange furnished with a number of projections 16 to facilitate the manipulation of the nut, and at the top is further provided with an upwardly extending flange 17 having a number of slots or notches 18 at equiangular distances apart. The upper surface of the nut 15 is also provided with a circumferential recess 19 extending to the bore. Attached to the bearer arm 10 is a bracket 21' one portion 22 of which is adapted to enter the circumferential groovem2O on the outer surface of the nut 15 in order to hold the nut from longitudinal movement whilst notpref venting it being rotated. The shaft 12 of the knife 9iis provided with a long! screw thread 23. of pitch. corresponding to that. of the nut 15, preferably of fine pitch. This portion of the knife shaft screws into the nut and the screw threadedaportion23 is so located on the shaft that it bringsthe knife substantiallyinto thecregiontof the bottom of the parison mould.

Theshaft 12 is-formed'witha.feather way 24 and; a saddlepiece25 is furnishedformed with a feather 26: adapted-to engage in the said feather way 24. The saddlerpiece is kept in position on theshaft 12b means of a metal strap 26a encircling: the said shaft the ends of which strap are suitably attached to the saddle piece at 27, so that in this way the saddle piece is caused to rotate w th the shaft but; it, is free to slide longitudinally thereon.

The saddlepiece 25 is provided with two lugs 28 betweenwhich ispivotedadetent or catch 29 of suitable shape to engage notchesor slots 18 in the top flange 17 of the nut 15 before referred to, and when so engaged the lower portion .30 of the saddle p ece 25 andzits strap if desired enter the before mentioned circumferential groove 19 at the top of the nut, the saddle piececontactinng with the nut by its weight only.

When it is required, for instance onchanging: moulds, toefiect coarseadjustment, that is to move the knife 9 through a comparat" 1y considerable vertical distance, the detent or catch 29 of the saddle piece 25 is d isene a god from the nut 15 as shewn inFig. 4:;and turned upwards and out of the way, and then the nut 15 can be rotated as many times as .re-

quired to efi'ect-thiscoarse adjustment.

On the other hand when it is only required to effect a fine adjustment, the nut 15 is only turned through a small angular distance as for instance that between two consecutive notches18, thus raising onlowering the knife shaft 12 to avery slight extent.

After adjustment thedetent 29 is turned downand re-engaged in one of-the notches, 18; thus preventing relative: rotative move-v ment between the nut 15 an d'the shaft 12.;

When the cutting stroke is to beetfected the knife shaft 12 isrotatedin any usual manner 1 than:

not shewn on the drawings, and the arrangement just described does not interfere with this rotary motion as the saddle piece 25 moves with the shaft 12 and the detent 29 carried by the said saddle piececauses the nut 15 also to move with. the, shaft 12", the thrust bearing 13 on the underside of the nut allowing for this movement.

It will be understood that although the in vention has been particularly described with reference to a rotary machine provided with dipping parison moulds, it may be adapted where found desirable to other types of machines in which it is necessary to cut off trailing glass.

Having now particularly described and ascertained the nature of my said invention and in what manner the sameis to be performed, I declare that What I claim is F?- 1. In a machine for the manufacture of glass, articles and of the type comprising a.

parison mould and a knife carried by a re tatable shaft, for cutting ofltrailing'glass from the bottom of the said. parison mould, means for adjusting theknife shaft vertically including a screw threaded portion on the shaft, a nut screwing onto the said portion and adapted to abut against a relatively-fixed portion in connection with the framework, means fixed to said framework and having engagement with said nut for maintaining the nut against mo ement a wayfrom the surface againstwhich it abuts but permitting rotation of said nut, relative to the framework, and means for preventing the nut from rotating on the shaft after adjustment for the purposes set forth.

2. In, a machine for the manufacture of glass articles and of the type comprising a parison mould and a knife carried by, a r0 tatable. shaft, for cuttingoff trailing glass from the bottom of the saidparison mould: means for adjustingthe knife shaft vertically. including a screw threaded portion onthe shaft, anut, screwing on tothesaid portion 1:;

and adapted to abut against a relatively fixed portion in connection with the framework, means fixed to said framework and having engagement with saidnut for maintaining the nut againstmovement away from the surface against which it ahutsbut permitting rotationqof the nut relative to the frame. the threaded portion of the shaft extending vertically above the nut, a member slidahlewith respect to but constrainedto rotate withthe tatableshaft, for cutting off trailing glass, 1-3

from the bottom of the said parison mould, 7.

and adapted to abut against a relatively fixed portion in connection with the framework, the screw threaded portion of the shaft extending vertically above the nut, means allowing of the rotation of the nut. whilst preventing its movement away from the surface against which it abuts, a saddle piece associated bya feather and feather way with the said shaft and normally contacting by its weight only with the nut, and inter-engaging means between the said saddle piece and the said nut for preventing their relative rotation, thus preventing the nut rotating on the shaft after adjustment, for the purposes set forth. I

4. In a machine for the manufacture of glass articles and of the type comprising a parison mould and a knife carried by a retatable shaft, for cutting off trailing from the bottom of the said parison mould;

. means for adj u-sting the knife and shaft vertically including ascrew threaded portion on the shaft, a nut screwing on to the said'portion and adapted to abut against a relatively fixed portion in connection with the said framework, the screw threaded portion of the shaft extending vertically above the nut, the said nut being provided with a plurality'of angularly spaced notches around its outer periphery, means allowing of the rotation of the nut whilst preventing its movement away from the surface against which it abuts, a member slidable with respect to but constrained to rotatewith the said shaft and normally contacting by its weight only with the nut, and a pivoted detent on the member adapted to engage with any one of the angularly disposed notches on the nut for preventin the relative rotation of the said member and the nut, thus preventing the nut rotating on the shaft after adjustment, all for the purposes set forth.

5. In a machine for the manufacture of glass articles and of the type comprising a parison mould and a knife carried by a rotatable shaft, for cutting oif trailing glass from the bottom of the said parison mould; means for adjusting the knife shaft vertically including a screw threaded portion on the shaft, a nut screwing on to the said portion and adapted to abut against a relatively fixed portion in connection with the said framework, the screw threaded portion of the shaft extending vertically above the nut, the said nut being provided with a plurality of angularly spaced notches around its outer surface, means allowing of the rotation of the nut whilst preventing its movement away from the surface against which it abuts, a saddle piece associated by a feather and feather way with the shaft, so that it is slidable with respect to said shaft and normally contacting. by its weight only with the nut, and a pivoted detent on the saddle piece, such detent being adapted to engage with any one of the angularly disposed notches on the nut, for pre-v venting the relative rotation of the said saddle piece and the said nut, thus preventing the nutrotating 0n the shaft after adjustment, substantially as described. 6,111 a machine for the manufacture of glass articles and of the'type comprising a tatable shaft, for cutting off trailing glass from the bottom of the said parison mould; means for adjusting the knife shaft vertical ly-including a screw threaded portionon the shaft, a nut screwing on to the said portion and adapted to abut against a relatively fixed portion in connection with the said framework, the screw threaded portion of the shaft extending vertically above the nut, the said nut being provided with a plurality of angu larly spaced notches around its outer surface, means allowing of the rotation of the nut whilst preventing its movement away from but constrained torotate with the I parison mould and a knife carried by a rothe surface against which it abuts, a'member I a pivoted detent on the member adapted to engage with any one of the angularly disposed notches on the nut, the said member being provided with axportion adapted to contact with the nut leaving the detent free to be turned into and out of engagement with any desired notch and adjustment to be easily as described.

7. In a machine for the manufacture of glass articles and of thetype comprisinga parison mould and 'a knife carried by a r0- tatable shaft, for cutting ofi' trailing glass from the "bottom of the said parison mould; means for'adjusting the knife shaft vertically including a screw threaded portion on the shaft, a nut screwing on to the said portion and adapted to abut against a relatively fixed portion in connection with the said framework, the screw threaded portion of the shaft extending vertically above the nut, the said nut being provided with a plurality of angu larly spaced notchesaround its outer surface and with a circumferential recess uponits uppersurfacefextending to the bore, means allowing ofthe rotation of the nut whilst preventing its movement away from the surface against which it abuts, a saddle piece associated bya feather and feather way with the shaft, so that it is slidable with respect to but constrained to rotate with the said shaft and normally contacting by its weight only with the nut, the lower portion of the said saddle piece being adapted to enter the before mentioned circumferential groove at 4 means the top of thenut, and apivoted detent on the saddle piece, such detent being adapted to en age with anyone ofthe angul'arly dispos'ef notches on the nut for preventing the relative rotation of the said saddle piece and the said nut thus preventing the nut rotating on the shaft after adjustment, all substantially as and for the purposes set forth. a.

8. In a machine for the manufacture of 10 glass articles, a supporting frame, a vertical shaft journaled in said frame and projecting above and below the'same, the upper pro- 'ecting end of the shaft being threaded, a ife fixed to the lower end of the shaft, 315 and means for adjusting the shaft vertically and for retaining the same in an adjusted position comprising a nut threaded onto the upper projecting end of the shaft and resting on thesupporting frame, the screw threaded portion of the shaft extending vertically above the nut, means conecting the frame and the nut for preventing upward movement of the latter relative to the frame and for permitting' rotation of the nut relative to the '3 shaft and to the frame, and means carried by the shaft and engageable by its weight only with the nut to lock the latter against rotation in any vertically adjusted position of the'shaft. i1!) 9. In a machine for the manufacture of glass articles, a supporting frame, a vertical shaft journaled in said frame and projecting above and below the same, the upper projecting end of the shaft being'threaded, a knife fixed to the lower end of the shaft, and means for adjusting the shaft vertically and for retaining the same in an adjusted position comprising a nut threaded onto the upper projecting end of the shaft and resting on the supporting frame, the screw threaded portion of the shaft extending vertically above the "nut means connecting the frame and the nut for preventing upward movement of the latter relative to the frame and for permitting rotation of the nut relative to the shaft and to the frame, a sleeve mounted on the shaft above the nut and connected to the shaft for relative sliding movements but retained against relative rotary movements t and normally contacting by its weight only with the nut, and means carried by the sleeve and engageable with the nut to lock the'latter against rotation in any vertically adjusted position of the shaft.

In witness whereof I affix my signature. SYDNEY HUNT.

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