US1239972A

US1239972A - Fountain-pen.

Info

Publication number: US1239972A
Application number: US8931616A
Authority: US
Inventors: William J Ruff
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-04-06
Filing date: 1916-04-06
Publication date: 1917-09-11
Anticipated expiration: 1934-09-11

Description

Patented Sept., H, 19M,

WL l. HUH". FOUNTAIN PEN. APPLlcATloN man APR. s. 191s.

' WILLIAM J. RUFF, or Quincy, ILLINOIS.-

FOUNTAIN-PEN.

` which the following is a specification.

This invention relates to devices oir' the class namcdyand'has for its object provision of means for readily lling the reservoir of fountain pens with writing lluid. The invention is exempliiied in the combination and arrangement of parts shown in the accompanying drawing and described in the following specification and it is more particularly pointed out in the appended claims.

In the drawing, Figure 1 is a longitudinal sectionalview of a fountain penembodying the present invention; Fig. 2 is a cross sectional view on line 2 2 of Fig. 1; Figs. 3, 4 and 5 are detail perspective views of parts of the device; and Fig. 6 is a bottom plan view of a threaded nipple used in the upper end of the pen.

The numeral 1 designates the reservoir or barrel of a fountain pen provided at one end with the usual ink-feeding device 2 and pen point 3. The upper end of the barrel has an openin threads 4 in whlch is threaded. a nipple 5. The nipple 5 is threaded both externally and internally, the external threads 6 being continual screw threads of the usual form. The internal threads, however, are partially broken away, as shown in Fig. 6, thus forming a mutilated thread having spaces 7 extending throughout one-quarter of the circumference of the thread and disposed diametrically opposite one another from which the threads are cut away. rThe remaining portions 8 of the thread each occupy an arch of 90 de rees and are likewise disposed diametrical y opposite one another. A cap 9 having a knurled head 10 is arranged for threaded engagement with the internal mutilated threads of the nipple V5. The cap 9, as shown in'Fig. 4, has a portion 11 provided with mutilated threads 12 arranged for engagement with the mutilated threads 8 of the nipple 5. When the cap'9 is held in position to cause the threads 12 to register with the'opening 7. in the nipple 5 the cap will slide freely 1n position in the nipple and a slight rotation of the knurled head 10 will then securely hold Specification of Letters Patent.

provided with internal- Patented Sept. 111, 191'?.

Application filed April e, 1916. serial no. 89,316.

vMounted for sliding movement on the piston rod 13 is a plunger or piston 16 provided` with packing 17 which'fits closely within the pen barrel 1. A second packing 18 surrounds the piston rod 13 making `a tight sliding fit' between the piston rod and Ythe piston head 16. As shown in Fig. 3 'the piston head 16 is provided with 'muti'- lated threads 19 similar to the threads 12 on the cap 9. The threaded portion 19 of the piston head 16 is arranged to enter the nipple 5 from the lower end and to engage the mutilated internal threads of the nipple in the same way that the cap 9 engages these threads from the upper end. As

shown in Figs. 1 and 2, the lower portion of the piston head 16 is provided with a lseat 20 for receiving the contact portion 14 of' the piston rod 13.. Connected to the seat 2O is a pair of bayonet slots 21 having circumferentially offset portions 22 for receiving the lugs 15 of the piston rod 13.

The operation of the device is as follows: Assuming the parts are in the position shown in Fig. 1, the finger piece 9 is given a quarter turn to the left which brings the mutilated threads into position to be withdrawn from the nipple 5. The piston rod is then drawn upwardly by means of the linger, piece 9 until the Contact member 14 enters the seat 20 in the lower end of the piston head 16, the lugs 15 at the same time entering the bayonet slots 21. When the piston rod has been drawn upwardly as far as it will go it is given an additional rotation of the piston rod 13. The rod is then moved inwardly carrying With it the piston head. `When the piston has reached its innermost position the lower end of the pen may be dipped into any container having Writing fluid therein and the piston is drawn up- Wardly. This movement Will create a vacuum in the pen barrel and the Writing fluid -ivill be forced by atmospheric pressure into the barrel. has reached the upper end of the barrel the threaded portion of the piston Will enter the lower end of the nipple 5. The piston may be given .a rotation to the left if necessary to bring the threads 19 into proper registering position to enter the lower end of the nipple.. When the piston head has thus been brought into position the piston rod is turned to the right, moving the lugs 15 out of the -offset portions 22 of the bayonet slots 21. Further rotation of the piston rod to the right will cause the mutilated threads 19 to engage with the threaded portion 8 of the nipple 5 and secure the piston head in position at the upper end of the pen barrel. The piston rod may then be returned to its inner position leaving the piston head at the upper end of the barrel. The only ink that will be removed from the barrel during the return movement will be that displaced by the piston rod 13 itself, Which Will be very slight. rlhe rod Will be locked in its innermost position by the mutilated threads 12 on the cap 9 and the pen Will be ready for use.

I claim:

1. In a fountain pen, a barrel having an opening in the end thereof, a piston movable Within said ybarrel and having .a portion thereof arranged to enter said opening and provided With mutilated threads for securing said piston to said barrel in position to close said opening, a rod for operating said piston, and means for detachably securing said rod to said piston.

Vhen the piston head 16- barrel.

2. In a fountain pen, a barrel having one end open, a piston locatedrwithin said barreland having a portion thereof arranged to enter the opening in said barrel, a rod slidably movable through said piston, means for detachably securing said rod to said piston, andl means secured to the end of said rod arranged to enter the outer end of the opening in said barrel and to be attached directly to said barrel to hold said rod in position Within said barrel.

'8. In combination, a fountain pen barrel, a piston movable Within said barrel, a rod for` said piston arranged to slide longitudinally therein, a packing Within said piston surrounding said rod, means for detachably securing sald piston directly to said barrel, means for detachably securing said rod to said piston, and means for'detachably securing said rod in fixed position relative to said 4. In combination, a fountain pen barrel, a piston movable longitudinally in said barrel for drawing Huid into said barrel, a rod for operating said piston and movable relative thereto, a bayonet slot for securing said piston to said rod, a nipple having threaded connection with an opening in one end of said barrel, mutilated threads Within said nipple, mutilated threads carried by said piston for detachably securing said piston in position at one end of said barrel, a cap secured to said rod, and mutilated threads formed on said cap for securing said rod in telescope position Within said barrel While said piston is held in position at one end thereof.

In testimony whereof I have signed my name to this specification, in the presence of tWo subscribing Witnesses, 4011 this 3rd day of April, A. D. 1916.

WILLIAM J. RUFF. Witnesses:

' CHARLES I-I. SEEM,

A. J'. CRANE.