Mail sorting rack

A mail sorting rack is provided utilizing a rack structure with a plurality of parallel divider blades between which the postal worker inserts mail pieces for various addresses in order, there being a tray in the instant invention underlying the mail which enables the worker to pull the tray free of the extending blades, eliminating the dividers from the sorted mail so that he may more easily group and band them for delivery.

BACKGROUND OF THE INVENTION 
The invention is in the field of mail sorting and particularly pertains to 
that aspect of sorting handled by the mail carrier before leaving on his 
route. Currently, the routeman has a rack with about four levels, each 
rack being perhaps four feet wide. There are a number of dividers slightly 
more than an inch apart in each rack, and at the bottom of the forward 
edge of the racks is a label identifying the space between each rack with 
a house number on a street. Thus, half a rack might represent one side of 
one street in the postman's route. 
When the delivery man receives his unsorted mail, he proceeds to sort it 
between the divider blades in his racks so that each pair of blades 
contains therebetween the mail intended for one house or business. After 
the mail is all sorted, the mailman takes down the mail by pulling out 
each batch separately from between the respective dividers, and then 
grouping them together, undivided, in large groups of perhaps two dozen or 
more delivery stop. Thus, although the divider blades are necessary to 
permit the mailman to sort the mail initially, they become a liability 
when he takes down the mail for grouping and banding because he must 
individually pull out the mail pieces from between each set of blades. 
In addition to the time lost in individually pulling down these small 
groups of mail, there is also a tendency for "sleepers", small pieces of 
mail that do not come down with the group, to be left up in the rack. 
These sleepers may stay there for several days before they are discovered. 
Thus, there is a definite need for some type of apparatus which would 
easily separate whole groups of mail from the dividers without having to 
separate it all individually. 
At least three different devices have been invented directed towards 
solution of this problem. The first invention, having U.S. Pat. No. 
1,030,317, utilizes removable dividers which are simply pulled free of the 
mail rack. However, in this day and age, there are ordinarily many blade 
pairs which have mail literally jammed between them, so that in a 
situation utilizing removable blades of the type shown in this patent, 
often times the mail would come free with the dividers. 
Another separating device is disclosed in U.S. Pat. No. 1,217,973 issued in 
1917. This suffers from the same drawback mentioned above, that is in 
modern times there is ordinarily too much mail to enable such a kilm 
system to work. Also, different size pieces would flip upwardly due to the 
wire construction of the flip-up bars in this last mentioned device. 
The third device, the subject of U.S. Pat. No. 1,593,326, most closely 
approaches applicant's invention by utilizing a number of blades which 
remain within the rack of the sorting device and have trays which pull out 
forwardly with the mail therein. However, this device also appears to be 
impractical in today's world because first, the divider blades of that 
invention pivot upwardly, and to pull a two-foot or four-foot tray full of 
mail out against the resistence of dozens of pivoted dividers would be 
obviously inconvenient. Also, a lot of today's letters contain bulky 
objects such as pencils, and the upward pivot motion of the separators 
would snag on the bulky protrusion and jamb the letters against the bottom 
of the above shelf. Further, the back bar of that invention probably would 
not serve to stop all pieces of mail, as it only catches the mail at the 
bottom and not near the top where it must be to be effective, so that some 
would be left inside the rack after the sorting tray had been pulled 
forward. 
There is thus a need for a simple, inexpensive, lightweight apparatus to 
facilitate mail sorting as thus described. 
SUMMARY OF THE INVENTION 
The present invention provides such an apparatus. The sorting rack 
structure utilized in the invention is similar to the four-tiered rack now 
used in the post office, but rather than having fixed dividers and no 
means of getting the mail out of the dividers other than by hand, dividers 
are used which are cantilevered so that they are spaced from the floor of 
the rack, permitting the insertion of a tray which has a bottom panel 
which passes beneath all of the divider blades. 
The back of the tray has a collecting means, either a comb with flat tines 
passing up between all the dividers, or a drawbar spanning the top of the 
tray and engaging the upper portion of each envelope in the sorting rack. 
Either embodiment permits the tray to be easily and conveniently drawn 
forward, bringing all the mail with it, so that it can be placed on a work 
table with the ordered mail banded and bagged for delivery.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
The invention would ordinarily be utilized in a large cabinet 10 which is 
rectangular and open, having side walls, bottom and top walls, and a rear 
wall. This cabinet houses four racks in ordinary usage. The entire cabinet 
is not shown in the drawings. At four spaced intervals along the cabinet 
walls 12 are a pair of opposed tracks 14 which although used presently to 
hold currently used racks, can just as well be used to support the racks 
of the instant invention. 
The racks 16 of the instant invention, as best seen from FIG. 7, basically 
constitutes a back panel 18 with a floor 20. The lateral or side edges of 
the floor are reduced as shown at 22 so that they fit in the tracks 14 in 
the sides of the cabinet 10. This also provides a plainer upper surface 
adjacent the tracks 14. The rack must have some means for supporting a 
multiplicity of spaced projecting divider blades 24 so that all or most of 
the bottom edge of the blade clears the floor 20 with sufficient clearance 
to permit the passage of the tray therebeneath. In the preferred 
embodiment, this is accomplished by constructing the back panel 18 in 
sandwich fashion, with a rear formed face and a middle laminate 26 being 
provided with spaced notches 28 having V-shaped expanded portions 
interiorly of said face. An L-shaped insert 30 slips back against the 
middle laminate 26, the lower panel 32 of the insert slipping into a 
channel 34 cut into the floor of the rack. 
The upper leg or panel 36 of the insert has a plurality of parallel-edged 
notches 38, so that when this panel defines the forward laminate of the 
rear panel 18, the effect is to form a slot which is parallel when entered 
from the front and expands rearwardly to define a widened V-shaped cavity. 
Each of the divider blades 24 in the preferred embodiment has a V-shaped 
T-panel 40 defined at the rear thereof. This panel slips into the notches 
28, defining a secure, strong connection between the blade and the back 
panel. For further strength, a foot 42 may be incorporated in the blade 
just forward of the T-panel. This foot seats down into the channel 34 and 
is captured in one of the notches 60 of the insert 30. This construction 
is particularly strong and not particularly expensive or difficult to 
achieve. Being removable, the blades make possible the creation of double, 
triple, and even larger spaces to accommodate particular addresses that 
habitually receive more than the usual amount of mail. 
If this type of blade construction is used, the tray 44 must have 
re-entrant spaced notches 46 in the rear edge of its bottom panel 48 to 
accommodate the feet 42 of the blades. 
Beyond these cutaways, the tray incorporates a pair of lateral sides 50 and 
a strip or panel 52 to permit labeling the spaces between the blades 
according to the house or business it represents. The strip 52 is ideally 
integral with the tray bottom and strong enough to permit usage of the 
strip as a handle. 
In all events, the bottom panel 48 is sufficiently thin to pass beneath the 
cantilevered blades 24, atop the floor 20 of the rack. The rear of the 
tray could be made in a variety of ways, but the two embodiments shown 
are, first, a solid back wall 54 could be used, as illustrated in FIG. 6, 
with pass-through slots 56 to accommodate the blades. This construction is 
strong and very effective, but to even further streamline the tray, the 
configuration in FIG. 10 could be used wherein a drawbar 58 replaces the 
comb structure of the back wall 54, the drawbar being low enough to 
purchase a sufficient portion of the upper rear edge of a mailing piece so 
that no "sleepers" will lie behind in the rack. Inasmuch as the minimum 
mail dimension is 31/2 inches, a drawbar height of about 3 inches would 
effectively prevent sleepers. 
A third embodiment, not shown, could be simply a comb structure similar to 
the configuration of the metal laminate 26 of the back panel. The flat, 
wide tines of the comb would effectively draw the mail between the blades. 
In fact, the embodiment of FIG. 6 actually represents a comb structure 
with a drawbar integral with the top of the tines. 
It can be seen that all of the blades are tapered in the forward direction. 
The effect of this taper is to permit the easier withdrawal of the trays 
from the racks. As the tray draws forwardly, the lateral space available 
for the mail might increase by more than an inch overall, on a two-foot 
wide tray, making it easier to draw the mail out. This tapering will 
further reduce the possibility of creating sleepers. 
The cabinets presently used in post offices across the country are four 
feet wide. As shown in FIG. 1, the trays illustrated in the instant 
disclosure are two feet wide, making it easier on the mailman than it 
would be if he had to pull out a four-foot wide tray, which could be very 
awkward. It also simplifies replacement of the tray, especially in the 
event that the configuration of FIG. 6 is used in which the slots 56 would 
have to be aligned with all of the blades. 
The invention has been in used in a post office and has significantly 
reduced the time required to sort mail. It has been received 
enthusiastically, and if adapted as standard post office equipment, could 
significantly reduce mail storing time and thus shave a few precent from 
the cost of mail delivery.