US1197774A - Mandrel. - Google Patents

Description

F. C. SMITH.

MANDREL.

APPLICATION HLED JUNE 26. 191.3.

Patented Sept. 12, 1916.

W TNESSES. INVENTUR m: NOAH-4'5 PETERS cu. mmmumn msumcram p c with a mandrel.

FREDERICK C. SMITH, 0F PORT ARTHUR, TEXAS.

MAN'DREL.

- Specification of Letters Patent.

Patented Sept. 12, 1916.

Application filed June 26, 1913. Serial No. 775,832.

To all whom it may concern Be it known that I, FREDERICK C. SMITH, a citizen of the United States, residing at Port Arthur, in the county of J efi'erson and State of Texas, have invented certain new and useful Improvements in Mandrels, of which the following is a specification.

This invention relates to new and useful improvements in collapsible mandrels.

The object of theinvention is to provide a device of the character described upon which may be rolled bolts of flexible material such as manufactured roofing, which is usually made of felt or some other fibrous body, which is saturated with, and whose sides are covered by, water-proof material, such as asphaltum or some other similar material. This mandrel may also be used for rolling other similar materials, such as paper or fibrous goods, which, in their preparation for market, are formed into rolls. 7

In rolling thegoods above described it is usually necessary to use a mandrel, and, unless the mandrel is collapsible, when the roll is formed thereon it is impractical to remove the mandrel, by reason of the fact that the material is so tightly wound thereon that the mandrel cannot be removed, and consequently a separate mandrel would have to be used for each roll.

It is the object of this invention to provide a mandrel which when placed in the rolling machine will be held firmly against collapsing, but after the roll has been removed from said machine the mandrel may i be easily collapsed and removed from the roll, and again used for rolling the succeeding rolls, and consequently only one mandrel is necessary and the rolls, when prepared for market, will not be encumbered A further feature in the improved construction whereby the mandrel may be easily placed in the rolling machine for the formation of a roll and readily removed therefrom.

With the above and other objects in View the invention has particular relation to cortam novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wheren:

Figure lis a side elevation of the mandrel inits collapsed position. Fig. 2 is an end view thereof. Fig. 3 is a side elevation of the invention resides ,tion sought to be of the mandrel in its expanded position, and asused when the roll is being formed thereon. Fig. 4 is an end view thereof. Fig. 5 is a side elevation of the rolling machine with the mandrel therein, showing a roll of material wound on the mandrel; and Fig. 6 is an end view thereof. Referring now more drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 refers to the framework of the rolling machine which has alined bearings 2 and 3 arranged, respectively, on each end thereof. The bearing 2 is open above, as shown in Fig. 6, and a short shaft 4 normally rests therein. Alined with the shaft 4 on the other side"of the machine is a shaft 5 which is rotatably mounted in the bearings 3 and 6, the latter of which is supported upon the upper end of the support 7. This shaft 5' is also slidable longitudinally in its bearings, and is operatively connected with its driving mechanism or shaft 8, which 'receivesrotation from a suitable motor, not shown. Any preferred form of drive mechanism may be used, and it is not thought necessary to specifically'describe the mechanism shown. his mechanism, however, may be readily connected with and disconnected from the motor by means of the clutch 9 in a wellknown manner, as, for instance, a handlever 9 having suitable connections 9 with said clutch. I preferably drive the shaft 5 from the shaft 8, by means of a friction wheel or pulley 5 having driving contact with a grooved friction pulley 8, fixed on the shaft 8, said pulley 5 being feathered to the shaft 5 so that the latter may move lengthwise through said 'pulley' 5 without displacing the same from the groove of the pulley 8.

The mandrel itself comprises the invenprotected hereby, and said mandrel will now be described.

The numerals 10 and 11 designate, respectively. two bearing *members forming the respective heads or ends of the mandrel. These members preferably consist of short stud shafts or cylindrical blocks, formed of metal or some other durable material. To the inner end of one of said heads, shown as being the head 10, is secured a hollow bar or shaft 12, and to the inner end of the opposite head is secured a solid bar or shaft 13, which telescopes within the bar or shaft particularly to the 12, said shafts being slidable, relative to one another. The bar or shaft 12 has oblong slots 14: in both sides thereof and extending into the hollow thereof, and the said shaft 13 has a pin 15 fixed thereto, which projects out tllIOllg'h the slots 14:. This pin limits the lengthwise movement of the shaft 13 relative to the shaft 12, said movement being limited by the length of the slots 14:. A plurality, preferably four, material-supporting members comprising in the present embodiment of the invention, round bars or hollow shafts 16, 17, 18 and 19 are provided, of a length preferably equal to the desired length of the roll to be formed, and these respective bars or shafts are connected at their respective ends to the stub shafts or heads 10 and .11, by means of short links 20, 20, 21, 21, 22, 22, and 23, 23, said links being pivoted at their outer ends to the re spective ends of the corresponding bars or shafts, and at their inner ends to said stub shafts 10 and 11. The material-supporting members upon which the roll is formed remain in normally expanded relation during the formation of the roll until the stub shafts 10 and 11 are moved apart and the links above described are operated so as to move the bars 16, 17, 18 and 19 close together, consequently collapsing the mandrel, and permitting easy and ready removal of the completed roll of material. Conversely, a movement of the heads or stub shafts toward each other operates through the links to expand the mandrel into position ready for the formation of a new roll thereupon. In this manner, I have provided a mandrel, the material-supporting members of which are capable of two positions, an expanded position in which the roll of material is formed, and a collapsed position to permit removal of the mandrel from the roll and its use for the formation of other rolls.

The outer ends of the shafts 10 and 11 have centrally located sockets 21- and 25 to receive the respective inner ends of the shafts 1 and 5, when the mandrel is in position in the rolling machine and the roll of material is being formed thereon. The shaft 5 has a collar 26 fixed thereon, interposed between which and the bearing 6 is a coil spring 27, which tends to force said shaft 5 toward the mandrel and hold the inner end of said shaft in the socket 25, and the inner end of said shaft 4 in the socket 24.

Near the inner end of shaft 5 is a pin 28 extending each way from said shaft and fitting into a corresponding transverse groove 29, across the outer end of the head or shaft 11. The pin 28 locks in the groove 29 and forces the mandrel to rotate with the shaft 5. However, any other preferred means for locking these shafts so that they will rotate together may be adopted, such as by making the socket 25 square and shaping the inner end of said shaft 5 to conform thereto. VVhen the mandrel is in position in the rolling machine the free end of the material 30 is manually rolled around the mandrel, and the shaft 5 then operatively connected with the driving mechanism which operates to rotate the mandrel and wind the roll thereon. hen the roll is formed to the desired size it is then grasped manually and forced against shaft 5, which slides back in the bearings 3 and 6 so as to disengage the socket 24 from the inner end of the shaft at. The outer end of this shaft is hinged as at 81 to an adjustable support 81, projecting from the corresponding end of the frame 1, and when the inner end of shaft 4 has been disengaged from the socket 24: said shaft may then be lifted out of its bearing 2 and the roll removed from the rolling machine. The mandrel may then be manually collapsed very readily and removed from the roll.

When it is desired again in the machine for the formation of the next roll, the socket 25 is engaged over the inner end of the shaft 5 and said shaft forced back in its bearings, as before described, and the shaft 1 is then manually swung around into its bearing 2 and its free end brought into alinement with the socket 4c and the push of the coil spring 27 against the collar 26 will force the shaft 5 and the mandrel toward the free end of the shaft 4:, and cause said free end to engage in the socket 24, and hold the mandrel expanded. The support 31 may be adjusted toward and from the supporting frame by means of hand screw 82 operable by a hand wheel 32 upon which hand screw said support 31 is mounted, as shown in Fig. 1, so that mandrels of different lengths may be accommodated to the rolling machine. From the description hereinbefore set forth it is obvious that the material may be wound tightly on the mandrel and thus formed into a compact roll which will thereby be more evenly and compactly formed, and will occupy the smallest amount of space, and when completed the mandrel may be easily and quickly removed therefrom.

lVhile I have shown only one form of my device it is apparent that the mechanical construction thereof may be varied without departing from the principle of the inven tion, and I desire to reserve the right to alter the mechanical construction thereof, so long as I do not depart from the scope of the appended claims.

What I claim is 1. In a device of the class described, the combination of a frame provided with bearings, stub shafts journaled in said bearings, one of said shafts being endwise movable, a spring acting upon the latter shaft, and a mandrel carried by said shafts and compristo place the mandrel ing a plurality of bars on which a roll of material may be wound and having normally expanded relation while said roll is being wound thereon, two slidably connected members having heads at their outer ends provided with means fitting said stub shafts, and links connecting said slidably connected members with opposite ends of said bars respectively to collapse the bars upon sliding movement of said members and permit the roll has been wound.

removal of said mandrel from the material In testimony whereof I have hereunto when the roll has been wound. signed my name in the presence of two sub- 2. A mandrel comprising a plurality of scribing witnesses.

bars upon which a roll of material may be wound and having normally expanded rela- FREDERICK SMITH shaft slidingly fitted therein, the shafts having heads fixed on the outer ends thereof provided with sockets to engage supporting means for the mandrel, and links pivoted to heads and to the opposite ends of said bars and capable of collapsing the bars upon the sliding movement of the parts of said telescopic shaft to permit the removal of said mandrel from the material when the tion while said roll is bemg wound thereon, Witnesses: and a central mounting device for said bars L. E. BARROWS, comprising a tubular shaft and a second W. E COACH.

Copies of this patent may be obtained tor five cents each, by addressing the "Commissioner 01' ratentl, Washington, D. C.

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