US810038A

US810038A - Dust-guard.

Info

Publication number: US810038A
Application number: US18815504A
Authority: US
Inventors: Edward Denegre
Original assignee: Mccord & Co
Current assignee: Mccord & Co
Priority date: 1904-01-08
Filing date: 1904-01-08
Publication date: 1906-01-16
Anticipated expiration: 1923-01-16

Description

No. 810,038. PATENTED JAN. 16, 1906. E. DENEGRE.

DUST GUARD.

APPLICATION FILED JAN. 3, 1904. v

I 4 X f c? a Tag JZQ/MW from each other.

UNITED STATES EDWARD DENEGRE, OF CHICAGO,

PATENT OFFICE.

ILLINOIS, ASSIGNOR TO MoCORD &

DUST-GUARD.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed January 8. 1904. Serial No. 188,155.

To aZZ whom it may concern.-

Be it known that I, EDWARD DENEGRE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Dust-Guards; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved dust-guard for car-axle journalboxes; and to this end my invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

The invention is illustrated in the accompanying drawings, wherein like notations refer to like parts throughout the several views.

In said drawings, Figure 1 is a view, chiefly in vertical section, but with some parts shown in elevation, others removed, and others broken away, showing my improved dustguard in working position. Fig. 2 is a view in vertical section on the line 412 m of Fig. 1. Fig. 3 is a view showing the sectional guardplate detached and the two sections separated Fig. 4 is a view showing one of the sections of the guard-plate in edge elevation or at right angles to Fig. 3. Fig. 5 is a detail in cross-section on the line 110 m of Fig. 2. Fig. 6 is a detail in cross-section on'the line as w of Fig. 3; and Fig. 7 is a view showing the retaining-washer for the packing-ring in elevation, detached, with the two sections of the washer separated from each other.

The reference-letters a a a represent parts of the car-axle, the part a being the body portion of the axle, a the journal portion thereof, and a the partof the axle intermediate of the journal portion a and the body portion a, and which part a is subject to the action of the dust-guard.

The journal-box Z) may be of the ordinary or any suitable construction and is provided with a faced or machined raised boss 6, surrounding the axle-passage at the inner end of the box and adapted to serve as the joint surface to be packed. The box 6 is also provided with a lock flange or lug b at the top of its inner end and with keeper-lugs b on its inner end face.

The guard-plate is of sectional form, being composed of two sections, each having the body or semicircular portion 0 and the pair of lateral extensions or ear-like lugs c. The lugs 0 at the top of the guard-plate are each provided with hook-like extensions 0 adapted to engage over the lock-flange b of the box when the guard-plate is in working position, as shown in Fig. 1. The ear-lugs c of the guard-plate sections are also provided with interlocking parts 0 and c of male and female form, adapted to engage with each other and to lock the two sections of the guard-plate together when in working position. As shown, the male or dowel members 0 are on one section of the guard-plate, and the female memhere or cooperating perforated flanges c are on the other member of the guard-plate, these interlocking parts being raised on the faces of the ear-lugs 0, so as to permit the same to interlock, while permitting the two sections of the guard-plate to be drawn tightly together, as shown in Fig. 2. The body portions 0 of the sectional guard-plate are of semicircular form, adapting the same to encircle the axle, and are provided on their faces each with a raised flange c properly positioned to afliord a seat 0 for corresponding sectional packing-ring d. The sectional packing-ring "(Z is preferably composed of gray iron, but may be composed of any other suitable material adapted to the purpose, and the two sections thereof are of a proper size to closely fit the portion a of the axle when in working position and to properly pack the same. The packing-ring d is removably secured to its seat 0' on the guard-plate in any suitable way. The means shown for the purpose are a secthe face of the ring, and nutted bolts (V, the heads of which are countersunk in the guardplate and the stems of which work through the packing-ring sections and the sections of the washer b, the nuts being applied at the exterior of the washer, as clearly shown in Figs. 1 and 2.

The box I) has keeper-lugs b on its rear end face above and belowthe axle-passage, between which the lugs c of the guard -plate extend when in working position, and are adapted to be engaged by the body portions of half-elliptic clamping-springs e, the ends of which engage with the keeper-lugs b of the box. These springs e are sprung and driven into place after the guard-plate is applied in working position, thus being applied tional retaining-washer d, adapted to overlie under compression and serving to yieldingly clamp the guard-plate and the packing-ring to the box, and the said springs a are strong enoughto sustain the'weight of theguardplate and the packing-ring by the clamping friction secured thereby, thus taking the load of the dust-guard in all positions which it may assume relative to the box, and thus relieving the axle from any wear and tear which would otherwise be produced if the weight of the dust-guard was permitted to be taken by the axle itself. The portion of the guard-plate 0 which cooperates with the face of the boxboss 6 is faced or machined to a corresponding true surface, so that when the guard-plate is in working position and under the yielding clamping action from the springs e the jointsurface at the face of the boss Z) will be tightly packed by the guard-plate, thus affording a dust-tight joint between the guard-plate and the box. Then as the guard-plate carries the sectional packing-ring d, which closely fits the portion a of the axle, the joint with the axle will be tightly packed thereby. The sections of the packing-ring cl are of course of a greater radial width than the flat portion of the seat for the same on the guard-plate 0, or, otherwise stated, the inner circle of the packing-ring is of less diameter than the inner circle of the semicircular part or body portion of the guardplate, so that the guard plate itself never comes in contact with the axle.

With this improved dust-guard constructed as hereinbefore described it is of course obvious that the entire guard will move across the face of the rear end of the box, as may be required under the motions peculiar to the service and as may be required to compensate for the wearing down of the brasses 6* or the keys 6", or both.

One great advantage of this form of dustguard is that the sectional packing-ring is removably seated on the guard-plate and may at will be removed therefrom without removing the guard-plate from the box. This is a great convenience whenever replacement is required.

Another highly-convenient feature of this improved dust-guard is incidental to the sectional construction of the guard-plate, which feature permits the entire guard-plate to be removed from the box and the axle whenever so desired without the separation of the axle and the box.

The means shown for yieldingly clamping the dust-guard to the box is an extremely simple and convenient one, while atthesame time it has proved in practice to be highly efficient for the purpose had in view.

The dust-guard herein disclosed has been extensively used in actual service, and the efficiency thereof has been fully demonstrated.

The special purpose of the hooks c on the guard-plate sections is to prevent the loss of the dust-guard in case the springs a should by any possibility become lost.

The special form of clamping devices herein disclosed for yieldingly clamping the dustguard to the box in proper working position does not of course depend upon the sectional form of the guard-plate herein described nor on the particular location of the packing-ring herein shown. Some of the other details of the construction might also be varied without departing from the principle of my invention.

It should be noted that the guard-plate, as shown, is interposed between the packingring and the rear end of the box and that the space between the dust-guard and the hub of the carwheel f is suflicient to permit the removal of the packing-ring.

What I claim, and desire to secure by Letters Patent of the United States, is as follows:

1. The combination with a journal-box, of a guard-plate, a sectional packing-ring, and means for yieldingly clamping said parts to the box, the said guard-plate being interposed between the packing-ring and the box, and said packingring being removable, from the box independently of the guard-plate, substantially as described.

2. The combination with a journal-box, of a guard-plate, a sectional packingring seated in the outer face of the guard-plate, and means for yieldingly clamping said parts to the box, the said guard-plate being interposed between the packing-ring and the box, and said packingring being removable from the box independently of the guard-plate, substantially as described.

3. Thecombination with a journal-box, of a sectional guard-plate, a sectional packingring, and means for yieldingly clamping said parts to the box, the said guard-plate being interposed between said packing-ring and the box, and the said packing-ring being removable from the box independently of the guardplate, whereby the packingring or the entire ICC dust-guard can be removed at will, without EDWARD 'DENEGRE.

Witnesses:

H. D. HOUGHTALING, JAMEs D.-DENEGRE.