US1764803A

US1764803A - Safety attachment for typesetting machines

Info

Publication number: US1764803A
Application number: US330742A
Authority: US
Inventors: Denis P Mclaughlin
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-01-07
Filing date: 1929-01-07
Publication date: 1930-06-17
Anticipated expiration: 1947-06-17

Description

Patented .lune 17, 193@ DENIS P. Iv'IoLAUGI-ILIN, GF SAN DIEGO, CALIQRNIA SAFETY ATTACHMENT Fon 'rrrnsiimrinerieoiiinns Application le. Ji'anuary 7, 1929. Serial No. 330,742.

My invention relates to safety attachments for typesetting machines and the objects of my invention are: First,` to provide a safety attachment which maybe used With any typesetting machine which has incorporated therein a quick-change mold ejecting apparatus using` ejector blades; second, to provide a device of this class which prevents the molds,

mold liners, or ejectorblades from being 10 broken -or ruined due to the ejector blades being to eject a greater number of ems than the size of the mold; third, to provide a safety attachment of this class Which when the mold disc is Vrotated the ejector blade opcrating mechanism automatically shifts so that only the ejector blade necessary to eject the smallest mold provided on the mold disc 'will operate, thus unless the operating mechanism is reset to the proper size mold, the ejector blade Would only strike a portion of the slug formed in the mold, breaking the slug, but as the slug can easily be recast and is of comparatively soft metal, no damage is done to the machine and it is only necessary to eject the remaining` portion'of the slug and recast the line; fourth, to provide a safety attachment of this class which eliminates the constant expense of liners or molds which are ruined for further use every time eighth, to provide a device of this class which is simple of construction proportional to its functions, durable, efficient in its action and which will not readily deteriorate or get out of'order. p

With these and other objects in view as will appear hereinafter, my invention consists of` certain novell features of construction, combi:

nation and arrangement of parts and portions they are struck by the ejector blade; ifth,`to"

shown by dotted lines.

as will be hereinafterdescribed in detailY and particularly setforth in the appended claims, reference being had to the accompanying draiviiigs and to the characters of reference thereon `which form al part of this applica-55 tion in which Figure l is a fragmentary side elevational View of a typesetting machine showing aportion of my safety attachment in connection therewith with parts andl portions thereof@ iii section to facilitate the illustration; Fig, 2 is a fragmentary sectional viev7 of a typesetting machine taken near the ejectorblade setting mechanism showing my attachment in connection therewith in'elevation'; Fig. 3 Vis i 65 an enlarged fragmentary] elevational view of my attachment from the-line 3`3 of Fig. 2.; Fi 4 is a sectional vieivfthereof through L -T4 oflfig. 2 With parts and portions shoivn'fragi'nentarily to facilitate the illustration; Fig. 5 -70 Ais a fragmentary sectional'vieiv through 5- 5 of Fig. 3 with parts and portions shovvnin elevation to facilitate the illustration Fig.

. 5 a transverse sectionalv view tlfi'rough 6 6 of Fig. jivith parts and porti-ons shown in 7.5 elevation to facilitate the illustration; Fig. 7

' is another transverse sectional vieiv through T-T of Fig. 5; andFig. 8 is Van elevational vieiv of my attachment taken at rightrangles A to the views shown in Fi l and 2 With parts so and portions in section' and essential, -adiac-eiit portions ofthe typesetting machine Similar characters of. reference refer to similar parts and portions throughout thef-BE several views lof the drawings.

Bracket Liever member 2, set soreWS, cam l, shaft 5,shaft bearings 'a-nd 7 4Weight'S, ejector lever 9, upper latch handle l0, lovver latch handle 1l, springs 12, arm members 13,@90 link members 14- and 15, and double lever member 16, constitute the principal parts and portions of my safety attachment. p i In the conventional structure Without myl safety attachment, ivhen the ejector' bladel ist`5 set for a Wider Width than the mold, the ejector blades strike the liners which limit the Width of the mold bending the liners and jamming them in the slots in which they titan necessitating many times considerable repairczloo in order to again putthe mold in condition for use. At other times the ends of the eject-or blades are bent so that they must be changed. vVith my device the slug is the only thing that is damaged and as this may be readily recast, very little trouble is caused by the mistake of the operator.

A bracket 1 is secured to theframe of the typesetting machine below the mold disc pinion gear A of said machine. A lever member 2 is pivotally support-ed in the bracket l by means of a pin la. The one arm 2a of said lever extends upwardly and is provided with a set screw 3 which extendstherethrough in such a manner as to engage the pinion gear A.

When the handle B attached to the pinion gear is pulled out the pinion gear causes the lever 2 to pivot about the pin la. The other arm 21 which is considerably longer than the arm 2 extends downwardly from the bracket and engages a cam 4 mounted on a shaft 5.

The shaft 5 is supported in bearings 6 and 7, the bearing 6 of which is secured to a low,

horizontally extending portion of the typeset-v ting machine frame C. The shaft5is supported as close as possible to the upper side of the extended portion C so as to clear the under side of the vise closing lever D. shown in dotted outline in Figs. land 8 of the drawings. A'portion of the shaft 5 extends outwardly vfrom the machine and a weight 8 is mounted thereon which tends to force the cam4 away from the lever 2. The shaft 5 passes under the vise .closing levers and lunder the vise spring E,- shown by dotted outline in Fig. 8. An offset portion 5ais provided in the shaft 5 in order to clear said spring. The shaft 5 passes under or over other mechanism, not shown, formingr a part of the vise mechanism of the machine to the second shaft bearing 7, to be described later.

A second arm Fsimilar to the arm C, extends outwardlyfrom the machine on the opposite side of the vise mechanism from the arm C. Another frame portion G of the typesetting' machine extends transversely to the arm F a short distance back of the axis of the rod 5, as shown in Figs. 2 and 4 of the drawings. Y f

Secured to this portion G of the frame is an ej ector lever rod bracket H which extends upwardly and backwardly from the frame portion G terminating in a bearing for supporting the ejector rod lever 9. This lever 9 is similar to the conventional ejector lever except for its extended end which is changed in shape slightly so as to facilitate its use in connection Ywith my safety device. Y 4Pivotally mounted upon a pin 9a which is supported byand extends transversely to the lever 9, by means of downwardly extending ear portions 10L which straddle the ejector lever 9 is an upper latch handle l0. The ejector lever 9 is enlarged around the pin 9a as shown best in Fig. 5 in order to form a suitable support therefor.

T he latch handle l0 extends past and above the end of the ejector lever 9. A spring l2 extends between the end of the ejector lever 9 and the under side of the latch handle 10 and tends to force said latch handle away from said ejector lever.

A catch member l0" is mounted at the one side of said upper latch handle 10. This catch member 10" is adapted to engage teeth of a rack member J which forms a part of the typesetting machine.

This rack member J on the conventional machine is adapted to hold the ejector lever by means of a latch handle similar to the handle l() in a predetermined position, the notches therein corresponding to the various ejector blades. llVhen the conventional ejector lever Vis at the'highest point of the rack Jc the fewest number of ejector blades are permitted to function. As the lever 9 is lowered relative to the rack, more ejector blades are brought into action.

Pivotally mounted on the same pin 9a bymeans of ear portions l1a is a second or lower latch handle. rl'he ears 11n extend over the ears l()a o f the upper latch handle. Secured to the side of one of the ear port-ions 11*1 is a catch member lll which is adapted to engage teeth on the rack J in a manner similar to the upper latch l0". The extended end of the lower latch member projects past the end of the ejector lever 9 and is similar in size and shape to the upper latch handle l0. A spring- 12, as in the manner before described, tends to force the low-er latch handle ll away from the ejector lever.

Thus in order to change the position of the lever, it is necessary to move both latch hanf dles towards the lever and disengage both catch members l()b and 11".

Secured to the one side of the upper latch handle 10, preferably on the opposite side from the latch lever 10b, is an arm member 13.l This arm 13 extends towards the pivot point of the lever 9. Connected with the end of the arm 13 is a link member 14.

' One of the ear portions 1l of the lower latch handle ll is provided with an extendedv portion l1 to which is rpivotally attached by its one end a link member 15. v

A double lever member 1G is secured to the shaft 5 between two portions of a bearing 7, which is secured to or made integral with the ejector lever rod bracket H.

The double lever member 16 is provided with two arms 16? and 1Gb. The arm 16 is relatively short and is connected to the link member 14 which is secured to the arm I connected to the lower latch handle ll.

l-"rs the point at which the link member ll connects with the arm 13 is relatively near the pivotal point of the ejector member' 9 of the arm 16n which connects with the` link member 14: it may be relativelyV short. 'llfhercas the point at which the link member 15 connects with the lower latch handle 11 is relatively far spaced from the pivotal point of the ejector' lever 9, the a m 1Gb is made, of course, correspondingly long.

The pivotal movement of the double inemberlG, as indicated by the arrow in Fig. 2 causes the link member 1.4i to rotate the upper latch member about the pin 9, disengaging the catch member 1()b from the rack J. T his same movement of the lever 16 pushes upwardly on the link member 15 and rotates the loiver latch handle so that its catch member disengages the rack.` Continued movement of the lever 16 shifts the ejector'lever to its upper position on the rack J, the position at which the minimum number of ejector' blades Will function.

In order to regulate the movement of the double lever 16 a set screiv'16c is provided which is screvvably mounted in a lug 16d, formingl a part of the lever 16. The set screw engages the ejector lever rod bracket when the lever 16 is shifted to its upper position.

The Weight 8 tends to lift the double lever 16 as soon as the latch members are released from the rack J, and also lessens therebound of the apparatus.

rlihe operation of my safety attachment is as follows: To chang; the mold disc from one size mold to another, it is necessary to disengage the pinion A from a pin member which rigidly connects said pinion gear to a shaft. ln doing so the lever 2 is caused to rotate about its axis Which in turn causes the rotation of the shaft 5. rllhis movement causes the latches 10" and 11b to disengage the latch and permit the lever to rise to its upper position. Thus, for example, When the mold has been previously set to form a twelve em slug and is then set for an eight em slug, the ejector lever automatically moves to the position for ejectinga four em slug, or the smallest slug for which the device is set to eject. lNhen the ejector blades only four ems in Width strike the slug, the slug` breaks and only7 four ems thereof are ejected. lllhe slugY beingl made of relatively soft material breaks Without damaging the ejector lade. All the operator is required to do after the slug; is broken is to reverse the machine slightly, set the ejector blade to the proper Width and eject the portion of the slug remaining in the mold, then recast the slug.

Though I have shown and described a particular construction, combination and ararrangement of parts and portions, l do not Wish to be limited to this particular construction, combination and arrangement but desire to include in the scope of my invention the construction, combination and arrangement 1. ln a safety attachment of the class described', the combination with a type setting machine havin g a mold disc drive pinion and ejector blades operated by an ejector lever, of

a rod and lever means operated by said mold#v disc pinion and engageable vvith said ejector lever for shifting said ejector lever so as to permit the operation of only a predetermined minimum number of ejector blades.

2. ln a safety attachment `ofthe class described, the combination With a typesetting machine having a mold `disc drive pinion and ejector blades operated by an ejector lever, of a lever means operated by said pinion gear, a rotatable shaft operated by said lever means, said shaft extending to a point in operative relation to said ejector lever, and link means connecting said ejector lever with said shaft for shifting said ejector lever to a predetermined position vvhen said shaft is actuated by lsaid lever means.

3. ln a safety attachment of the class described, the combination With a typesetting machine having a shiftable mold disc pinion and ejector blades, an ejector lever for placing said blades in operative position, and a latch and rack means for holding,` said lever in various shifted positions, of a rod and lever means operated by said pinion gear and engageable with said latch means for disen- @aging saidlatch means from said rack means and shifting` `said latch and ejector lever to a predetermined position. l

Il. In a safety attachment of the class described, the combination Witha typesettingmachine having a shiftable mold disc pinion and ejector blades, an ejector lever for placing saidblades in operative position, and a latch and rack means for holding said lever in various shiftedpositions, of a lever .means operated by said pinion gear, a shaft operated by said lever means, said Vshaft extending to a point in operative relation to -said latch means, and link means connectingsaitl shaft with said latch means for disengaging said latch means from said rack and shifting said latch means and said ejector lever to aV pinion gear and engageable with each of said latch means for disengaging said latch means from said rack and shifting said ejector lever to a ypredetermined position.

6. In a safety attachment of the class described, the combination with a typesetting machine having a shiftable mold disc pinion,

ejector blades, an ejector lever for permitting` the operation of any number of said ejector -blades and a rod means co-operating with said ejector lever, of a latch means mounted on opposite sides of said ejector lever near the extended end thereof, each of said latch means engageable with said rack means for holding said ejector lever in various shifted positions, a lever ,means operated by said pinion gear, a shaft operated by said lever means, said shaft extending to an operative position relative to said latch means, link members connecting said rod with said latch means for permitting` the movement of said rod to disengage said latch means from said rack and shift said lever to a predetermined position.

7. In a safety attachment of the class described, the combination with a typesetting machine having a shiftable mold disc pinion, ejector blades, an ejector lever for permitting the operation of any number of said ejector blades and a rod means cooperating with said ejector lever, of a latch means mounted on the under side of said ejector lever at the extended end thereof, said latch means engealiile with said rack for holding said levei` in various shifted positions, a rod and lever vleans operated. by said pinion gear and engageable with said latch means for disengagin g said latch means from said rack and shifting said ejector lever to a predetermined position.

S. In a safety attachment of the class described, the combination With a typesetting machine having a shiftable mold disc pinion, ejector blades, an ejector lever for permitting the operation of any number of said ejector' blades and a rodmeans co-operating with said ejector lever, of a latch means mounted on the under side of said ejector lever at the extended end thereof, said latch mea ns engageable with said rack for holding said lever in various positions, a lever means operated by said pinion gear, a shaft operated by said lever means, said shaft extending to a position in operative relation to said latch means, an Aarm extending Yfrom said shaft, a link member connecting said arm with said latch means for disengaging said latch means from said rack and shifting said latch and ejector lever to a predetermined position.

In testimony whereof, I have hereunto set my hand at San Diego, California, this 21st day of December, 1928.

DENIS r. Mensuel-itin. i